{"id":298310,"date":"2023-12-25T18:53:55","date_gmt":"2023-12-25T11:53:55","guid":{"rendered":"https:\/\/hoanghamobile.com\/tin-tuc\/?p=298310"},"modified":"2025-12-31T20:47:32","modified_gmt":"2025-12-31T13:47:32","slug":"duong-cheo-hinh-vuong","status":"publish","type":"post","link":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/","title":{"rendered":"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t (l\u1edbp 8)"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng l\u00e0 g\u00ec? H\u00ecnh vu\u00f4ng l\u00e0 t\u1ee9 gi\u00e1c c\u00f3 4 c\u1ea1nh b\u1eb1ng nhau v\u00e0 4 g\u00f3c vu\u00f4ng 90\u00b0. C\u00e1c t\u00ednh ch\u1ea5t ch\u00ednh: hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau, vu\u00f4ng g\u00f3c c\u1eaft nhau t\u1ea1i trung \u0111i\u1ec3m; c\u00f3 \u0111\u01b0\u1eddng tr\u00f2n n\u1ed9i-ngo\u1ea1i ti\u1ebfp; th\u1eeba h\u01b0\u1edfng t\u00ednh ch\u1ea5t h\u00ecnh ch\u1eef nh\u1eadt v\u00e0 h\u00ecnh thoi. B\u00e0i vi\u1ebft h\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft, c\u00f4ng th\u1ee9c \u0111\u01b0\u1eddng ch\u00e9o v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8 \u0111\u1ec3 h\u1ecdc sinh d\u1ec5 \u00e1p d\u1ee5ng.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">H\u00ecnh vu\u00f4ng c\u00f3 t\u1ea5t c\u1ea3 t\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt v\u00e0 h\u00ecnh thoi, c\u1ed9ng th\u00eam c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m sau:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>4 c\u1ea1nh b\u1eb1ng nhau v\u00e0 4 g\u00f3c vu\u00f4ng 90\u00b0<\/b><span style=\"font-weight: 400;\">: T\u1ea1o s\u1ef1 \u0111\u1ed1i x\u1ee9ng ho\u00e0n h\u1ea3o.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau, vu\u00f4ng g\u00f3c, c\u1eaft nhau t\u1ea1i trung \u0111i\u1ec3m<\/b><span style=\"font-weight: 400;\">: M\u1ed7i \u0111\u01b0\u1eddng ch\u00e9o l\u00e0 ph\u00e2n gi\u00e1c g\u00f3c v\u00e0 tr\u1ee5c \u0111\u1ed1i x\u1ee9ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u01b0\u1eddng tr\u00f2n n\u1ed9i ti\u1ebfp v\u00e0 ngo\u1ea1i ti\u1ebfp<\/b><span style=\"font-weight: 400;\">: T\u00e2m tr\u00f9ng giao \u0111i\u1ec3m hai \u0111\u01b0\u1eddng ch\u00e9o.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u00e1c \u0111\u01b0\u1eddng trung tuy\u1ebfn, ph\u00e2n gi\u00e1c, trung tr\u1ef1c giao nhau t\u1ea1i m\u1ed9t \u0111i\u1ec3m<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>M\u1ed7i \u0111\u01b0\u1eddng ch\u00e9o chia h\u00ecnh th\u00e0nh hai tam gi\u00e1c vu\u00f4ng c\u00e2n c\u00f3 di\u1ec7n t\u00edch b\u1eb1ng nhau<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5 minh h\u1ecda: Trong h\u00ecnh vu\u00f4ng ABCD, AC = BD, AC \u22a5 BD t\u1ea1i O (trung \u0111i\u1ec3m), O l\u00e0 t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n ngo\u1ea1i ti\u1ebfp.<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-1.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-1-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-1-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-298312 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-1.jpg\" alt=\"duong-cheo-hinh-vuong-1\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-1.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-1-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-1-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3><b>D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft h\u00ecnh vu\u00f4ng<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ed9t t\u1ee9 gi\u00e1c l\u00e0 h\u00ecnh vu\u00f4ng n\u1ebfu th\u1ecfa m\u00e3n m\u1ed9t trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n sau (l\u1edbp 8):<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 hai c\u1ea1nh k\u1ec1 b\u1eb1ng nhau.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 hai \u0111\u01b0\u1eddng ch\u00e9o vu\u00f4ng g\u00f3c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 m\u1ed9t \u0111\u01b0\u1eddng ch\u00e9o l\u00e0 ph\u00e2n gi\u00e1c m\u1ed9t g\u00f3c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u00ecnh thoi c\u00f3 m\u1ed9t g\u00f3c vu\u00f4ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">H\u00ecnh thoi c\u00f3 hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5: H\u00ecnh ch\u1eef nh\u1eadt ABCD v\u1edbi AB = AD \u2192 ABCD l\u00e0 h\u00ecnh vu\u00f4ng.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">\u0110\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c t\u00ednh?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">D\u1ef1a v\u00e0o t\u00ednh ch\u1ea5t \u1edf tr\u00ean th\u00ec \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh vu\u00f4ng ch\u00ednh l\u00e0 m\u1ed9t \u0111o\u1ea1n n\u1ed1i 2 \u0111\u1ec9nh \u0111\u1ed1i x\u1ee9ng trong h\u00ecnh vu\u00f4ng. \u0110i\u1ec3m \u0111\u1eb7c bi\u1ec7t l\u00e0 \u0111\u01b0\u1eddng ch\u00e9o n\u00e0y s\u1ebd chia h\u00ecnh vu\u00f4ng ra 2 h\u00ecnh tam gi\u00e1c v\u1eeba vu\u00f4ng v\u1eeba c\u00e2n v\u00e0 n\u1eb1m \u0111\u1ed1i nhau. Vi\u1ec7c n\u00e0y c\u00f3 l\u1ee3i khi b\u1ea1n mu\u1ed1n t\u00ednh k\u00edch th\u01b0\u1edbc c\u1ee7a \u0111\u01b0\u1eddng ch\u00e9o v\u00e0 kh\u00f4ng n\u1eafm \u0111\u1ed9 d\u00e0i c\u1ee7a c\u00e1c c\u1ea1nh.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady th\u00ec \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c coi nh\u01b0 c\u1ea1nh huy\u1ec1n thu\u1ed9c hai tam gi\u00e1c c\u00f3 t\u00ednh ch\u1ea5t vu\u00f4ng c\u00e2n. V\u00ec v\u1eady c\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng s\u1ebd \u0111\u01b0\u1ee3c t\u00ecm ra t\u1eeb \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago v\u1ec1 tam gi\u00e1c vu\u00f4ng.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5 ta c\u00f3 m\u1ed9t h\u00ecnh vu\u00f4ng t\u00ean l\u00e0 ABCD v\u1edbi \u0111\u1ed9 d\u00e0i c\u00e1c c\u1ea1nh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 a. \u0110\u01b0\u1eddng ch\u00e9o l\u00e0 AC s\u1ebd ph\u00e2n chia h\u00ecnh vu\u00f4ng n\u00e0y ra hai tam gi\u00e1c c\u00f3 t\u00ednh ch\u1ea5t vu\u00f4ng c\u00e2n l\u00e0 tam gi\u00e1c ACD v\u00e0 tam gi\u00e1c ABC.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Khi \u00e1p d\u1ee5ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago v\u1ec1 tam gi\u00e1c c\u00f3 t\u00ednh ch\u1ea5t vu\u00f4ng c\u00e2n ABC th\u00ec ta \u0111\u01b0\u1ee3c:<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-2.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-2-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-2-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"size-full wp-image-298313 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-2.jpg\" alt=\"duong-cheo-hinh-vuong-2\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-2.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-2-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-2-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">V\u00ec v\u1eady ta c\u00f3 c\u00f4ng th\u1ee9c t\u00ednh \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh vu\u00f4ng g\u1ed3m \u0111\u1ed9 d\u00e0i c\u00e1c c\u1ea1nh l\u00e0 a: AC (\u0111\u01b0\u1eddng ch\u00e9o) = a (c\u1ea1nh h\u00ecnh vu\u00f4ng) x c\u0103n b\u1eadc hai c\u1ee7a 2.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng\u00a0<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp 1: Gi\u1ea3 s\u1eed ta c\u00f3 h\u00ecnh vu\u00f4ng c\u00f3 \u0111\u1ed9 d\u00e0i c\u00e1c c\u1ea1nh l\u00e0 3cm. V\u1eady \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh vu\u00f4ng n\u00e0y l\u00e0 bao nhi\u00eau? \u221a18cm hay 6cm, 5cm, 4cm?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e1p \u00e1n:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago cho h\u00ecnh vu\u00f4ng tr\u00ean nh\u01b0 sau:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AC\u00b2 = AB\u00b2 + BC\u00b2\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">= 3\u00b2 + 3\u00b2 = 18<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady ta c\u00f3 th\u1ec3 suy ra \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh vu\u00f4ng tr\u00ean c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0 AC = \u221a18cm.<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-3.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-3-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-3-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img decoding=\"async\" class=\"size-full wp-image-298314 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-3.jpg\" alt=\"duong-cheo-hinh-vuong-3\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-3.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-3-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-3-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp 2: Cho 1 h\u00ecnh vu\u00f4ng c\u00f3 \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o l\u00e0 2cm. V\u1eady c\u00e1c c\u1ea1nh thu\u1ed9c h\u00ecnh vu\u00f4ng n\u00e0y b\u1eb1ng bao nhi\u00eau? 3\/2 cm hay 1cm, \u221a2cm, 4\/3 cm?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e1p \u00e1n:\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ch\u00fang ta c\u0169ng \u00e1p d\u1ee5ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago cho tam gi\u00e1c c\u00f3 t\u00ednh ch\u1ea5t vu\u00f4ng c\u00e2n ABC. B\u00e0i t\u1eadp tr\u00ean \u0111\u00e3 c\u00f3 s\u1eb5n \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng ch\u00e9o l\u00e0 2cm n\u00ean ta c\u00f3 c\u1ea1nh huy\u1ec1n AC = 2cm. B\u00e2y gi\u1edd ch\u00fang ta s\u1ebd t\u00ecm \u0111\u1ed9 d\u00e0i c\u1ee7a c\u1ea1nh AB theo c\u00f4ng th\u1ee9c sau:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AC\u00b2 = AB\u00b2 + BC\u00b2\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">= 2AB (BC = AB)<\/span><\/p>\n<p><span style=\"font-weight: 400;\">T\u1eeb \u0111\u00f3 suy ra:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">AB\u00b2 = AC\u00b2 : 2\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">= 2\u00b2 : 2 = 2 <\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady th\u00ec AB c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0 \u221a2.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">\u0110\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng c\u00f3 nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0o?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">Hi\u1ec7n nay vi\u1ec7c t\u00ecm hi\u1ec3u c\u00e1ch t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh vu\u00f4ng c\u00f3 th\u1ec3 \u1ee9ng d\u1ee5ng v\u00e0o nhi\u1ec1u l\u0129nh v\u1ef1c trong \u0111\u1eddi s\u1ed1ng ch\u00fang ta nh\u01b0 sau:<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Thi\u1ebft k\u1ebf v\u00e0 x\u00e2y d\u1ef1ng<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Trong l\u0129nh v\u1ef1c thi\u1ebft k\u1ebf v\u00e0 x\u00e2y d\u1ef1ng th\u00ec ng\u01b0\u1eddi ta \u00e1p d\u1ee5ng c\u00e1c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh vu\u00f4ng nh\u1eb1m x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c v\u1ecb tr\u00ed v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a nh\u1eefng nh\u00e2n t\u1ed1 nh\u01b0 c\u1eeda ra v\u00e0o, c\u1eeda s\u1ed5, c\u00e1ch b\u00e0i tr\u00ed c\u00e1c \u0111\u1ed3 d\u00f9ng n\u1ed9i th\u1ea5t c\u00f9ng nh\u1eefng chi ti\u1ebft li\u00ean quan \u0111\u1ebfn ki\u1ebfn tr\u00fac,&#8230;<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">C\u1eaft, c\u1eaft g\u00f3c<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Khi b\u1ea1n mu\u1ed1n c\u1eaft h\u00ecnh vu\u00f4ng cho ra 2 ph\u1ea7n nh\u01b0 nhau ho\u1eb7c mu\u1ed1n c\u1eaft 1 g\u00f3c chu\u1ea9n th\u00ec c\u00f4ng th\u1ee9c t\u00ednh \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh vu\u00f4ng l\u00e0 r\u1ea5t h\u1eefu d\u1ee5ng \u0111\u1ec3 \u0111em l\u1ea1i \u0111\u1ed9 \u0111\u1eb9p v\u00e0 ch\u00ednh x\u00e1c.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">\u0110o l\u01b0\u1eddng<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Trong l\u0129nh v\u1ef1c \u0111o \u0111\u1ea1c th\u00ec vi\u1ec7c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 t\u00ednh kho\u1ea3ng c\u00e1ch k\u1ec3 t\u1eeb 1 \u0111i\u1ec3m t\u1edbi 1 \u0111i\u1ec3m kh\u00e1c qua 1 v\u1ecb tr\u00ed m\u00e0 b\u1ea1n kh\u00f4ng \u0111\u01b0\u1ee3c ti\u1ebfp c\u1eadn m\u1ed9t c\u00e1ch tr\u1ef1c ti\u1ebfp.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed v\u00e0 c\u00f4ng ngh\u1ec7<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Trong l\u0129nh v\u1ef1c n\u00e0y th\u00ec c\u00f4ng th\u1ee9c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh vu\u00f4ng d\u00f9ng \u0111\u1ec3 t\u00ednh k\u00edch c\u1ee1 hi\u1ec3n th\u1ecb c\u1ee7a m\u00e0n h\u00ecnh v\u00e0 k\u00edch th\u01b0\u1edbc c\u1ee7a vi\u1ec1n m\u00e0n h\u00ecnh.\u00a0<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-4.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-4-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-4-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298315 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-4.jpg\" alt=\"duong-cheo-hinh-vuong-4\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-4.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-4-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-4-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3><span style=\"font-weight: 400;\">\u0110\u1ed3 h\u1ecda m\u00e1y t\u00ednh v\u00e0 tr\u00f2 ch\u01a1i<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">L\u0129nh v\u1ef1c n\u00e0y c\u1ea7n \u00e1p d\u1ee5ng c\u00e1c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh vu\u00f4ng \u0111\u1ec3 t\u00ednh kho\u1ea3ng c\u00e1ch c\u1ee7a t\u1ecda \u0111\u1ed9, di\u1ec7n t\u00edch nh\u1eefng h\u00ecnh vu\u00f4ng t\u1ed3n t\u1ea1i trong kh\u00f4ng gian 3D ho\u1eb7c 2D.\u00a0<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda v\u00e0 ngh\u1ec7 thu\u1eadt<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Trong thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda v\u00e0 ngh\u1ec7 thu\u1eadt th\u00ec vi\u1ec7c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u1ec3 thi\u1ebft l\u1eadp s\u1ef1 \u0111\u1ed1i x\u1ee9ng, c\u00e2n \u0111\u1ed1i trong nh\u1eefng thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda v\u00e0 nh\u1eefng t\u00e1c ph\u1ea9m ngh\u1ec7 thu\u1eadt.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">Th\u1ecb gi\u00e1c m\u00e1y t\u00ednh v\u00e0 x\u1eed l\u00fd c\u00e1c h\u00ecnh \u1ea3nh<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Trong l\u0129nh v\u1ef1c n\u00e0y th\u00ec vi\u1ec7c t\u00ednh to\u00e1n \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng nh\u1eb1m x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c g\u00f3c v\u1edbi h\u00ecnh d\u1ea1ng nh\u1eefng \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 trong c\u00e1c h\u00ecnh \u1ea3nh.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">To\u00e1n h\u1ecdc v\u00e0 h\u00ecnh h\u1ecdc<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Vi\u1ec7c t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng ch\u00ednh l\u00e0 \u0111\u1ecbnh ngh\u0129a h\u00ecnh h\u1ecdc c\u0103n b\u1ea3n, n\u00f3 c\u00f3 vai tr\u00f2 r\u1ea5t quan tr\u1ecdng \u1edf nh\u1eefng b\u00e0i t\u00ednh to\u00e1n c\u00f3 li\u00ean quan v\u1ec1 h\u00ecnh vu\u00f4ng v\u00e0 nh\u1eefng d\u1ea1ng h\u00ecnh h\u1ecdc t\u01b0\u01a1ng t\u1ef1.<\/span><\/p>\n<h2><span style=\"font-weight: 400;\">\u0110\u01b0\u1eddng ch\u00e9o h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 g\u00ec? T\u00ednh ch\u1ea5t?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">H\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt \u0111\u01b0\u1ee3c coi nh\u01b0 d\u1ea1ng h\u00ecnh h\u1ecdc t\u1ee9 gi\u00e1c c\u00f3 t\u00ednh l\u1ed3i v\u00e0 bao g\u1ed3m 4 g\u00f3c \u0111\u1ec1u vu\u00f4ng. \u0110\u01b0\u1eddng ch\u00e9o trong h\u00ecnh n\u00e0y c\u00f3 v\u00e0i t\u00ednh ch\u1ea5t \u0111\u1eb7c bi\u1ec7t v\u00e0 r\u1ea5t c\u00f3 \u00edch khi gi\u1ea3i nh\u1eefng b\u00e0i t\u1eadp v\u1ec1 h\u00ecnh h\u1ecdc nh\u01b0 sau:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u0110\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh n\u00e0y c\u00f3 \u0111\u1ed9 d\u00e0i tr\u00f9ng v\u1edbi c\u1ea1nh huy\u1ec1n thu\u1ed9c tam gi\u00e1c c\u00f3 g\u00f3c vu\u00f4ng. V\u00ec v\u1eady \u0111\u01b0\u1eddng ch\u00e9o n\u00e0y c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0 c\u0103n b\u1eadc 2 c\u1ee7a t\u1ed5ng 2 c\u1ea1nh b\u00ecnh ph\u01b0\u01a1ng.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">H\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt s\u1ebd b\u1ecb \u0111\u01b0\u1eddng ch\u00e9o chia ra l\u00e0m 2 tam gi\u00e1c c\u00f3 g\u00f3c vu\u00f4ng v\u1edbi di\u1ec7n t\u00edch nh\u01b0 nhau. Nh\u01b0 v\u1eady th\u00ec \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh \u0111\u01b0\u1ee3c coi nh\u01b0 tr\u1ee5c \u0111\u1ed1i x\u1ee9ng trong h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt.<\/span><\/li>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">2 \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh ch\u1eef nh\u1eadt lu\u00f4n c\u00f3 \u0111\u1ed9 d\u00e0i nh\u01b0 nhau v\u00e0 2 \u0111\u01b0\u1eddng n\u00e0y s\u1ebd c\u1eaft nhau \u1edf trung \u0111i\u1ec3m t\u1eebng \u0111\u01b0\u1eddng v\u00e0 thi\u1ebft l\u1eadp \u0111\u01b0\u1ee3c b\u1ed1n tam gi\u00e1c c\u00f3 t\u00ednh ch\u1ea5t c\u00e2n.<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-5.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-5-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-5-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298316 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-5.jpg\" alt=\"duong-cheo-hinh-vuong-5\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-5.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-5-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-5-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2><span style=\"font-weight: 400;\">\u0110\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt t\u00ednh theo c\u00f4ng th\u1ee9c n\u00e0o?<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">T\u01b0\u01a1ng t\u1ef1 c\u00e1ch t\u00ednh \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng \u1edf tr\u00ean, t\u1eeb nh\u1eefng t\u00ednh ch\u1ea5t \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp \u1edf ph\u1ea7n tr\u00ean th\u00ec ch\u00fang ta h\u00e3y d\u00f9ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago v\u00e0o t\u00ednh \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh ch\u1eef nh\u1eadt nh\u01b0 sau:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00ed d\u1ee5 cho h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt l\u00e0 ABCD bao g\u1ed3m chi\u1ec1u r\u1ed9ng v\u1edbi \u0111\u1ed9 d\u00e0i l\u00e0 b, chi\u1ec1u d\u00e0i v\u1edbi \u0111\u1ed9 d\u00e0i l\u00e0 a v\u00e0 \u0111\u01b0\u1eddng ch\u00e9o l\u00e0 AC gi\u1ed1ng h\u00ecnh sau:<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-6.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-6-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-6-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298317 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-6.jpg\" alt=\"duong-cheo-hinh-vuong-6\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-6.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-6-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-6-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Khi d\u00f9ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago v\u00e0o tam gi\u00e1c c\u00f3 g\u00f3c vu\u00f4ng l\u00e0 ABC th\u00ec ta c\u00f3:\u00a0<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-7.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-7-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-7-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298318 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-7.jpg\" alt=\"duong-cheo-hinh-vuong-7\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-7.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-7-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-7-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady ta c\u00f3 k\u00edch th\u01b0\u1edbc \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt l\u00e0 c\u0103n b\u1eadc 2 c\u1ee7a t\u1ed5ng 2 c\u1ea1nh b\u00ecnh ph\u01b0\u01a1ng (chi\u1ec1u r\u1ed9ng v\u00e0 chi\u1ec1u d\u00e0i) trong h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt:<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-8.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-8-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-8-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298319 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-8.jpg\" alt=\"duong-cheo-hinh-vuong-8\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-8.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-8-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-8-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h2><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp \u00e1p d\u1ee5ng c\u00e1ch t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt<\/span><\/h2>\n<p><span style=\"font-weight: 400;\">T\u01b0\u01a1ng t\u1ef1 c\u00e1ch t\u00ednh \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng \u1edf tr\u00ean, c\u00e1c b\u1ea1n h\u1ecdc sinh c\u00f3 th\u1ec3 tham kh\u1ea3o m\u1ed9t v\u00e0i b\u00e0i t\u1eadp t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh ch\u1eef nh\u1eadt nh\u01b0 sau:<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp 1<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">H\u00e3y t\u00ecm ra \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt v\u1edbi chi\u1ec1u r\u1ed9ng l\u00e0 5dm, chi\u1ec1u d\u00e0i l\u00e0 10dm.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e1p \u00e1n:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta g\u1ecdi \u0111\u01b0\u1eddng ch\u00e9o c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0 a (\u0111i\u1ec1u ki\u1ec7n l\u00e0 a &gt; 0 v\u00e0 \u0111o l\u01b0\u1eddng b\u1eb1ng \u0111\u01a1n v\u1ecb l\u00e0 dm).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Theo \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago th\u00ec \u0111\u01b0\u1eddng ch\u00e9o c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0: <\/span><span style=\"font-weight: 400;\">a2 = 102 + 52. V\u1eady b\u00ecnh ph\u01b0\u01a1ng c\u1ea1nh a b\u1eb1ng<\/span><span style=\"font-weight: 400;\"> 125.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o a b\u1eb1ng 5\u221a5 dm.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp 2<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">H\u00e3y t\u00ednh ra \u0111\u1ed9 d\u00e0i c\u1ee7a \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt khi bi\u1ebft chi\u1ec1u r\u1ed9ng c\u1ee7a h\u00ecnh l\u00e0 5dm v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a h\u00ecnh l\u00e0 10dm.\u00a0\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e1p \u00e1n:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta coi \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh tr\u00ean c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0 a (v\u1edbi \u0111i\u1ec1u ki\u1ec7n l\u00e0 a &gt; 0 v\u00e0 a c\u00f3 \u0111\u01a1n v\u1ecb l\u00e0 dm).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ch\u00fang ta s\u1ebd d\u00f9ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago \u0111\u1ec3 t\u00ednh \u0111\u01b0\u1eddng ch\u00e9o nh\u01b0 sau:<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-9.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-9-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-9-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298320 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-9.jpg\" alt=\"duong-cheo-hinh-vuong-9\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-9.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-9-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-9-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp 3<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">M\u1ed9t h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt c\u00f3 \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o l\u00e0 13m v\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt l\u1edbn h\u01a1n \u0111\u1ed9 d\u00e0i chi\u1ec1u r\u1ed9ng c\u1ee7a h\u00ecnh l\u00e0 7m. V\u1eady h\u00e3y t\u00ednh di\u1ec7n t\u00edch v\u00e0 chu vi c\u1ee7a h\u00ecnh n\u00e0y.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e1p \u00e1n:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta g\u1ecdi \u0111\u1ed9 d\u00e0i chi\u1ec1u r\u1ed9ng c\u1ee7a h\u00ecnh l\u00e0 a (\u0111i\u1ec1u ki\u1ec7n l\u00e0 a &gt; 0 v\u00e0 \u0111\u01a1n v\u1ecb l\u00e0 m). Suy ra ta c\u00f3 chi\u1ec1u d\u00e0i b\u1eb1ng a + 7 (m).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00ec \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh tr\u00ean l\u00e0 13m n\u00ean ta s\u1ebd d\u00f9ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago nh\u01b0 sau:<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-10.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-10-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-10-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298321 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-10.jpg\" alt=\"duong-cheo-hinh-vuong-10\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-10.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-10-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-10-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady ta c\u00f3 \u0111\u1ed9 d\u00e0i chi\u1ec1u r\u1ed9ng l\u00e0 5m c\u00f9ng v\u1edbi chi\u1ec1u d\u00e0i l\u00e0 12m.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Suy ra ta c\u00f3 chu vi h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt b\u1eb1ng (5 + 12).2 = 34m v\u00e0 di\u1ec7n t\u00edch h\u00ecnh l\u00e0 12 x 5 = 60m2.<\/span><\/p>\n<h3><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp 4<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Cho chu vi c\u1ee7a 1 h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt l\u00e0 28cm v\u00e0 2 c\u1ea1nh trong h\u00ecnh n\u00e0y h\u01a1n k\u00e9m nhau kho\u1ea3ng 2cm. V\u1eady h\u00e3y t\u00ednh to\u00e1n \u0111\u1ed9 d\u00e0i \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh n\u00e0y.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e1p \u00e1n:\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta c\u00f3 chi\u1ec1u r\u1ed9ng l\u00e0 a (v\u1edbi \u0111i\u1ec1u ki\u1ec7n a &gt; 0 v\u00e0 \u0111\u01a1n v\u1ecb l\u00e0 m).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Suy ra ta c\u00f3 chi\u1ec1u d\u00e0i b\u1eb1ng a + 2 (m).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady chu vi c\u1ee7a h\u00ecnh l\u00e0 28cm n\u00ean suy ra: (a + a + 2).2 = 28.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Suy ra a = 6 (\u0111i\u1ec1u ki\u1ec7n \u0111\u1eb7t ra \u0111\u01b0\u1ee3c th\u1ecfa m\u00e3n).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady th\u00ec h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u r\u1ed9ng b\u1eb1ng 6m v\u1edbi chi\u1ec1u d\u00e0i trong h\u00ecnh b\u1eb1ng 8m.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">G\u1ecdi \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh tr\u00ean c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0 d th\u00ec ch\u00fang ta d\u00f9ng \u0111\u1ecbnh l\u00fd Pitago \u0111\u1ec3 t\u00ednh to\u00e1n nh\u01b0 sau:<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-11.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-11-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-11-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298322 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-11.jpg\" alt=\"duong-cheo-hinh-vuong-11\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-11.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-11-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-11-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<h3><span style=\"font-weight: 400;\">B\u00e0i t\u1eadp 5<\/span><\/h3>\n<p><span style=\"font-weight: 400;\">Cho chu vi c\u1ee7a 1 h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt l\u00e0 32m v\u1edbi di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh n\u00e0y l\u00e0 60m2. H\u00e3y t\u00ednh to\u00e1n \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh n\u00e0y c\u00f3 \u0111\u1ed9 d\u00e0i bao nhi\u00eau?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u00e1p \u00e1n:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta c\u00f3 \u00bd chu vi c\u1ee7a h\u00ecnh tr\u00ean l\u00e0 32\/2 = 16 (m).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ta g\u1ecdi chi\u1ec1u r\u1ed9ng h\u00ecnh b\u1eb1ng a (v\u1edbi \u0111i\u1ec1u ki\u1ec7n 0 &lt; a &lt; 16 v\u00e0 \u0111\u01a1n v\u1ecb l\u00e0 m).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u01b0 v\u1eady chi\u1ec1u d\u00e0i b\u1eb1ng 16 &#8211; a (m).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">V\u00ec di\u1ec7n t\u00edch h\u00ecnh tr\u00ean l\u00e0 60m2 n\u00ean suy ra:\u00a0<\/span><\/p>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-12.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-12-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-12-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298323 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-12.jpg\" alt=\"duong-cheo-hinh-vuong-12\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-12.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-12-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-12-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">Ta g\u1ecdi \u0111\u01b0\u1eddng ch\u00e9o trong h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt n\u00e0y c\u00f3 \u0111\u1ed9 d\u00e0i l\u00e0 d th\u00ec ta c\u00f3:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">a = 6 th\u00ec h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u r\u1ed9ng b\u1eb1ng 6m v\u1edbi chi\u1ec1u d\u00e0i h\u00ecnh b\u1eb1ng 10m. Khi d\u00f9ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago v\u00e0o tr\u01b0\u1eddng h\u1ee3p n\u00e0y th\u00ec ta c\u00f3:<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-13.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-13-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-13-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298324 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-13.jpg\" alt=\"duong-cheo-hinh-vuong-13\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-13.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-13-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-13-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">a = 10 th\u00ec h\u00ecnh h\u1ecdc ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u r\u1ed9ng b\u1eb1ng 10m c\u00f9ng chi\u1ec1u d\u00e0i b\u1eb1ng 6m. Khi d\u00f9ng \u0111\u1ecbnh l\u00fd c\u1ee7a Pitago v\u00e0o tr\u01b0\u1eddng h\u1ee3p n\u00e0y th\u00ec ta c\u00f3:<\/span><\/li>\n<\/ul>\n<p><picture><source srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-14.jpg.webp 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-14-300x169.jpg.webp 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/webp-express\/webp-images\/uploads\/2023\/12\/duong-cheo-hinh-vuong-14-768x432.jpg.webp 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" type=\"image\/webp\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-298325 aligncenter webpexpress-processed\" src=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-14.jpg\" alt=\"duong-cheo-hinh-vuong-14\" width=\"800\" height=\"450\" srcset=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-14.jpg 800w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-14-300x169.jpg 300w, https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-14-768x432.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\"><\/picture><\/p>\n<p><span style=\"font-weight: 400;\">N\u1ed9i dung b\u00e0i vi\u1ebft \u0111\u00e3 chia s\u1ebb v\u1ec1 c\u00f4ng th\u1ee9c t\u00ednh \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh vu\u00f4ng v\u00e0 \u0111\u01b0\u1eddng ch\u00e9o h\u00ecnh ch\u1eef nh\u1eadt cho m\u1ecdi ng\u01b0\u1eddi tham kh\u1ea3o. C\u00e1c b\u1ea1n h\u1ecdc sinh mu\u1ed1n h\u1ecdc t\u1ed1t m\u00f4n to\u00e1n h\u00ecnh th\u00ec ph\u1ea3i n\u1eafm v\u1eefng 2 c\u00f4ng th\u1ee9c tr\u00ean v\u00ec n\u00f3 c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n x\u1eed l\u00fd nhi\u1ec1u b\u00e0i t\u1eadp trong qu\u00e1 tr\u00ecnh h\u1ecdc.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Tham kh\u1ea3o b\u00e0i vi\u1ebft li\u00ean quan:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\"><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/dau-hieu-nhan-biet-tu-giac-noi-tiep\/\">D\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft t\u1ee9 gi\u00e1c n\u1ed9i ti\u1ebfp v\u00e0 v\u00ed d\u1ee5 minh ho\u1ea1<\/a><\/strong><\/li>\n<li style=\"font-weight: 400;\"><strong><a href=\"https:\/\/hoanghamobile.com\/tin-tuc\/giai-phuong-trinh-bac-2\/\">C\u00e1ch gi\u1ea3i ph\u01b0\u01a1ng tr\u00ecnh b\u1eadc 2 nhanh ch\u00f3ng nh\u1ea5t<\/a><\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng l\u00e0 g\u00ec? H\u00ecnh vu\u00f4ng l\u00e0 t\u1ee9 gi\u00e1c c\u00f3 4 c\u1ea1nh b\u1eb1ng nhau v\u00e0 4 g\u00f3c vu\u00f4ng 90\u00b0. C\u00e1c t\u00ednh ch\u1ea5t ch\u00ednh: hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau, vu\u00f4ng g\u00f3c c\u1eaft nhau t\u1ea1i trung \u0111i\u1ec3m; c\u00f3 \u0111\u01b0\u1eddng tr\u00f2n n\u1ed9i-ngo\u1ea1i ti\u1ebfp; th\u1eeba h\u01b0\u1edfng t\u00ednh ch\u1ea5t h\u00ecnh ch\u1eef nh\u1eadt v\u00e0 h\u00ecnh thoi. B\u00e0i vi\u1ebft h\u01b0\u1edbng [&hellip;]<\/p>\n","protected":false},"author":102,"featured_media":298311,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3910,30453],"tags":[],"class_list":["post-298310","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kham-pha","category-kien-thuc"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.2 (Yoast SEO v24.2) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: \u0110\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8<\/title>\n<meta name=\"description\" content=\"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: 4 c\u1ea1nh b\u1eb1ng nhau, 4 g\u00f3c vu\u00f4ng 90\u00b0, hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau vu\u00f4ng g\u00f3c c\u1eaft t\u1ea1i trung \u0111i\u1ec3m. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8 d\u1ec5 hi\u1ec3u.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t (l\u1edbp 8)\" \/>\n<meta property=\"og:description\" content=\"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: 4 c\u1ea1nh b\u1eb1ng nhau, 4 g\u00f3c vu\u00f4ng 90\u00b0, hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau vu\u00f4ng g\u00f3c c\u1eaft t\u1ea1i trung \u0111i\u1ec3m. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8 d\u1ec5 hi\u1ec3u.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/\" \/>\n<meta property=\"og:site_name\" content=\"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/hoanghamobilecom\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/hoanghamobilecom\" \/>\n<meta property=\"article:published_time\" content=\"2023-12-25T11:53:55+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-12-31T13:47:32+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"628\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Nguy\u1ec5n Xu\u00e2n Thi\u00ean\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"Nguy\u1ec5n Xu\u00e2n Thi\u00ean\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"15 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/\"},\"author\":{\"name\":\"Nguy\u1ec5n Xu\u00e2n Thi\u00ean\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/person\/26499da0a8947cbc1d286a6c25f0d1a4\"},\"headline\":\"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t (l\u1edbp 8)\",\"datePublished\":\"2023-12-25T11:53:55+00:00\",\"dateModified\":\"2025-12-31T13:47:32+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/\"},\"wordCount\":3176,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#organization\"},\"image\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg\",\"articleSection\":[\"Kh\u00e1m Ph\u00e1\",\"Ki\u1ebfn Th\u1ee9c\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#respond\"]}],\"copyrightYear\":\"2023\",\"copyrightHolder\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/\",\"url\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/\",\"name\":\"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: \u0110\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8\",\"isPartOf\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg\",\"datePublished\":\"2023-12-25T11:53:55+00:00\",\"dateModified\":\"2025-12-31T13:47:32+00:00\",\"description\":\"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: 4 c\u1ea1nh b\u1eb1ng nhau, 4 g\u00f3c vu\u00f4ng 90\u00b0, hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau vu\u00f4ng g\u00f3c c\u1eaft t\u1ea1i trung \u0111i\u1ec3m. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8 d\u1ec5 hi\u1ec3u.\",\"breadcrumb\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#breadcrumb\"},\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage\",\"url\":\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg\",\"contentUrl\":\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg\",\"width\":1200,\"height\":628,\"caption\":\"duong-cheo-hinh-vuong-15\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Trang ch\u1ee7\",\"item\":\"https:\/\/hoanghamobile.com\/tin-tuc\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t (l\u1edbp 8)\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#website\",\"url\":\"https:\/\/hoanghamobile.com\/tin-tuc\/\",\"name\":\"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/hoanghamobile.com\/tin-tuc\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"vi\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#organization\",\"name\":\"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile\",\"url\":\"https:\/\/hoanghamobile.com\/tin-tuc\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2021\/12\/logo-text.png\",\"contentUrl\":\"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2021\/12\/logo-text.png\",\"width\":256,\"height\":37,\"caption\":\"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile\"},\"image\":{\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/hoanghamobilecom\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/person\/26499da0a8947cbc1d286a6c25f0d1a4\",\"name\":\"Nguy\u1ec5n Xu\u00e2n Thi\u00ean\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"vi\",\"@id\":\"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/5e5cc5b9fee69402140e5b8ea8828660?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/5e5cc5b9fee69402140e5b8ea8828660?s=96&d=mm&r=g\",\"caption\":\"Nguy\u1ec5n Xu\u00e2n Thi\u00ean\"},\"description\":\"Ch\u00e0o c\u00e1c b\u1ea1n, m\u00ecnh l\u00e0 Xu\u00e2n Thi\u00ean. Trong k\u1ef7 nguy\u00ean s\u1ed1 thay \u0111\u1ed5i t\u1eebng gi\u1edd, m\u00ecnh \u1edf \u0111\u00e2y \u0111\u1ec3 c\u00f9ng b\u1ea1n c\u1eadp nh\u1eadt v\u00e0 ph\u00e2n t\u00edch nh\u1eefng chuy\u1ec3n \u0111\u1ed9ng m\u1edbi nh\u1ea5t c\u1ee7a th\u1ebf gi\u1edbi c\u00f4ng ngh\u1ec7. B\u1eb1ng s\u1ef1 am hi\u1ec3u v\u1ec1 h\u1ec7 sinh th\u00e1i c\u00e1c s\u1ea3n ph\u1ea9m c\u00f4ng ngh\u1ec7 hi\u1ec7n nay, m\u00ecnh cam k\u1ebft mang \u0111\u1ebfn cho b\u1ea1n nh\u1eefng g\u00f3c nh\u00ecn tr\u1ef1c quan, h\u1ed7 tr\u1ee3 b\u1ea1n l\u00e0m ch\u1ee7 c\u00f4ng ngh\u1ec7 m\u1ed9t c\u00e1ch th\u00f4ng minh nh\u1ea5t.\",\"sameAs\":[\"https:\/\/www.facebook.com\/hoanghamobilecom\"],\"url\":\"https:\/\/hoanghamobile.com\/tin-tuc\/author\/nguyen-xuan-thien\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: \u0110\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8","description":"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: 4 c\u1ea1nh b\u1eb1ng nhau, 4 g\u00f3c vu\u00f4ng 90\u00b0, hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau vu\u00f4ng g\u00f3c c\u1eaft t\u1ea1i trung \u0111i\u1ec3m. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8 d\u1ec5 hi\u1ec3u.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/","og_locale":"vi_VN","og_type":"article","og_title":"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t (l\u1edbp 8)","og_description":"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: 4 c\u1ea1nh b\u1eb1ng nhau, 4 g\u00f3c vu\u00f4ng 90\u00b0, hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau vu\u00f4ng g\u00f3c c\u1eaft t\u1ea1i trung \u0111i\u1ec3m. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8 d\u1ec5 hi\u1ec3u.","og_url":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/","og_site_name":"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile","article_publisher":"https:\/\/www.facebook.com\/hoanghamobilecom","article_author":"https:\/\/www.facebook.com\/hoanghamobilecom","article_published_time":"2023-12-25T11:53:55+00:00","article_modified_time":"2025-12-31T13:47:32+00:00","og_image":[{"width":1200,"height":628,"url":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg","type":"image\/jpeg"}],"author":"Nguy\u1ec5n Xu\u00e2n Thi\u00ean","twitter_card":"summary_large_image","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"Nguy\u1ec5n Xu\u00e2n Thi\u00ean","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"15 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#article","isPartOf":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/"},"author":{"name":"Nguy\u1ec5n Xu\u00e2n Thi\u00ean","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/person\/26499da0a8947cbc1d286a6c25f0d1a4"},"headline":"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t (l\u1edbp 8)","datePublished":"2023-12-25T11:53:55+00:00","dateModified":"2025-12-31T13:47:32+00:00","mainEntityOfPage":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/"},"wordCount":3176,"commentCount":0,"publisher":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#organization"},"image":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage"},"thumbnailUrl":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg","articleSection":["Kh\u00e1m Ph\u00e1","Ki\u1ebfn Th\u1ee9c"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#respond"]}],"copyrightYear":"2023","copyrightHolder":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#organization"}},{"@type":"WebPage","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/","url":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/","name":"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: \u0110\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8","isPartOf":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#website"},"primaryImageOfPage":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage"},"image":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage"},"thumbnailUrl":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg","datePublished":"2023-12-25T11:53:55+00:00","dateModified":"2025-12-31T13:47:32+00:00","description":"T\u00ednh ch\u1ea5t h\u00ecnh vu\u00f4ng: 4 c\u1ea1nh b\u1eb1ng nhau, 4 g\u00f3c vu\u00f4ng 90\u00b0, hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau vu\u00f4ng g\u00f3c c\u1eaft t\u1ea1i trung \u0111i\u1ec3m. H\u01b0\u1edbng d\u1eabn chi ti\u1ebft \u0111\u1ecbnh ngh\u0129a, d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft v\u00e0 b\u00e0i t\u1eadp l\u1edbp 8 d\u1ec5 hi\u1ec3u.","breadcrumb":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#breadcrumb"},"inLanguage":"vi","potentialAction":[{"@type":"ReadAction","target":["https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/"]}]},{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#primaryimage","url":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg","contentUrl":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2023\/12\/duong-cheo-hinh-vuong-15.jpg","width":1200,"height":628,"caption":"duong-cheo-hinh-vuong-15"},{"@type":"BreadcrumbList","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/duong-cheo-hinh-vuong\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Trang ch\u1ee7","item":"https:\/\/hoanghamobile.com\/tin-tuc\/"},{"@type":"ListItem","position":2,"name":"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh vu\u00f4ng \u0111\u1ea7y \u0111\u1ee7 nh\u1ea5t (l\u1edbp 8)"}]},{"@type":"WebSite","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#website","url":"https:\/\/hoanghamobile.com\/tin-tuc\/","name":"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile","description":"","publisher":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/hoanghamobile.com\/tin-tuc\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"vi"},{"@type":"Organization","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#organization","name":"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile","url":"https:\/\/hoanghamobile.com\/tin-tuc\/","logo":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/logo\/image\/","url":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2021\/12\/logo-text.png","contentUrl":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-content\/uploads\/2021\/12\/logo-text.png","width":256,"height":37,"caption":"Tin t\u1ee9c c\u00f4ng ngh\u1ec7 - HoangHaMobile"},"image":{"@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/hoanghamobilecom"]},{"@type":"Person","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/person\/26499da0a8947cbc1d286a6c25f0d1a4","name":"Nguy\u1ec5n Xu\u00e2n Thi\u00ean","image":{"@type":"ImageObject","inLanguage":"vi","@id":"https:\/\/hoanghamobile.com\/tin-tuc\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/5e5cc5b9fee69402140e5b8ea8828660?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/5e5cc5b9fee69402140e5b8ea8828660?s=96&d=mm&r=g","caption":"Nguy\u1ec5n Xu\u00e2n Thi\u00ean"},"description":"Ch\u00e0o c\u00e1c b\u1ea1n, m\u00ecnh l\u00e0 Xu\u00e2n Thi\u00ean. Trong k\u1ef7 nguy\u00ean s\u1ed1 thay \u0111\u1ed5i t\u1eebng gi\u1edd, m\u00ecnh \u1edf \u0111\u00e2y \u0111\u1ec3 c\u00f9ng b\u1ea1n c\u1eadp nh\u1eadt v\u00e0 ph\u00e2n t\u00edch nh\u1eefng chuy\u1ec3n \u0111\u1ed9ng m\u1edbi nh\u1ea5t c\u1ee7a th\u1ebf gi\u1edbi c\u00f4ng ngh\u1ec7. B\u1eb1ng s\u1ef1 am hi\u1ec3u v\u1ec1 h\u1ec7 sinh th\u00e1i c\u00e1c s\u1ea3n ph\u1ea9m c\u00f4ng ngh\u1ec7 hi\u1ec7n nay, m\u00ecnh cam k\u1ebft mang \u0111\u1ebfn cho b\u1ea1n nh\u1eefng g\u00f3c nh\u00ecn tr\u1ef1c quan, h\u1ed7 tr\u1ee3 b\u1ea1n l\u00e0m ch\u1ee7 c\u00f4ng ngh\u1ec7 m\u1ed9t c\u00e1ch th\u00f4ng minh nh\u1ea5t.","sameAs":["https:\/\/www.facebook.com\/hoanghamobilecom"],"url":"https:\/\/hoanghamobile.com\/tin-tuc\/author\/nguyen-xuan-thien\/"}]}},"_links":{"self":[{"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/posts\/298310","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/users\/102"}],"replies":[{"embeddable":true,"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/comments?post=298310"}],"version-history":[{"count":0,"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/posts\/298310\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/media\/298311"}],"wp:attachment":[{"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/media?parent=298310"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/categories?post=298310"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hoanghamobile.com\/tin-tuc\/wp-json\/wp\/v2\/tags?post=298310"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}