{"id":121635,"date":"2025-03-21T10:38:59","date_gmt":"2025-03-21T03:38:59","guid":{"rendered":"https:\/\/phongvu.vn\/cong-nghe\/?p=121635"},"modified":"2025-03-24T10:37:35","modified_gmt":"2025-03-24T03:37:35","slug":"cong-thuc-tinh-dien-tich-hinh-chu-nhat","status":"publish","type":"post","link":"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/","title":{"rendered":"Di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt: \u0110\u1ecbnh ngh\u0129a, c\u00f4ng th\u1ee9c v\u00e0 b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i"},"content":{"rendered":"\n<p>H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n nh\u1ea5t m\u00e0 ch\u00fang ta b\u1eaft \u0111\u1ea7u h\u1ecdc t\u1eeb nh\u1eefng n\u0103m \u0111\u1ea7u ti\u00ean trong tr\u01b0\u1eddng h\u1ecdc. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc \u0111\u01a1n thu\u1ea7n m\u00e0 c\u00f2n l\u00e0 n\u1ec1n t\u1ea3ng cho vi\u1ec7c hi\u1ec3u v\u00e0 gi\u1ea3i quy\u1ebft nhi\u1ec1u v\u1ea5n \u0111\u1ec1 th\u1ef1c ti\u1ec5n. T\u1eeb vi\u1ec7c t\u00ednh di\u1ec7n t\u00edch s\u00e0n nh\u00e0 \u0111\u1ec3 mua g\u1ea1ch l\u00e1t, \u0111\u1ebfn vi\u1ec7c t\u00ednh l\u01b0\u1ee3ng s\u01a1n c\u1ea7n thi\u1ebft \u0111\u1ec3 s\u01a1n t\u01b0\u1eddng, hay t\u00ednh to\u00e1n chi ph\u00ed khi mua \u0111\u1ea5t &#8211; t\u1ea5t c\u1ea3 \u0111\u1ec1u li\u00ean quan \u0111\u1ebfn di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt.<\/p>\n\n\n\n<p>B\u00e0i vi\u1ebft n\u00e0y c\u1ee7a <a href=\"https:\/\/phongvu.vn\/cong-nghe\/\" target=\"_blank\" rel=\"noreferrer noopener\">Phong V\u0169 Tech News<\/a> s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u r\u00f5 v\u1ec1 \u0111\u1ecbnh ngh\u0129a, t\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt, c\u00e1ch t\u00ednh di\u1ec7n t\u00edch c\u1ee7a n\u00f3, c\u00f9ng v\u1edbi c\u00e1c b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i chi ti\u1ebft v\u00e0 nh\u1eefng \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a ki\u1ebfn th\u1ee9c n\u00e0y.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<ul>\n<li><a href=\"https:\/\/phongvu.vn\/cong-nghe\/dien-tich-hinh-thang\/\" target=\"_blank\" rel=\"noreferrer noopener\">\u201cB\u1ecf t\u00fai\u201d 4 c\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh thang (vu\u00f4ng, c\u00e2n, th\u01b0\u1eddng) k\u00e8m b\u00e0i t\u1eadp chu\u1ea9n nh\u1ea5t 2025<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/phongvu.vn\/cong-nghe\/cach-xoa-ung-dung-tren-may-tinh-don-gian\/\" target=\"_blank\" rel=\"noreferrer noopener\">Top 5 c\u00e1ch x\u00f3a \u1ee9ng d\u1ee5ng tr\u00ean m\u00e1y t\u00ednh Windows &amp; Mac nhanh g\u1ecdn, d\u1ec5 hi\u1ec3u<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/phongvu.vn\/cong-nghe\/cach-viet-phan-so-trong-word\/\" target=\"_blank\" rel=\"noreferrer noopener\">5 c\u00e1ch vi\u1ebft ph\u00e2n s\u1ed1 trong word gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\" \/>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_55 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >M\u1ee5c l\u1ee5c<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\" role=\"button\"><label for=\"item-6a19c02634711\" ><span class=\"\"><span style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" 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ch\u1eef nh\u1eadt l\u00e0 g\u00ec?\">H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Tinh_chat_cua_hinh_chu_nhat\" title=\"T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt\">T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Cong_thuc_tinh_dien_tich_hinh_chu_nhat\" title=\"C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt\">C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Cac_bai_tap_co_loi_giai\" title=\"C\u00e1c b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i\">C\u00e1c b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i<\/a><ul class='ez-toc-list-level-3'><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Bai_tap_1_Tinh_dien_tich_co_ban\" title=\"B\u00e0i t\u1eadp 1: T\u00ednh di\u1ec7n t\u00edch c\u01a1 b\u1ea3n\">B\u00e0i t\u1eadp 1: T\u00ednh di\u1ec7n t\u00edch c\u01a1 b\u1ea3n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Bai_tap_2_Tim_chieu_rong_khi_biet_dien_tich_va_chieu_dai\" title=\"B\u00e0i t\u1eadp 2: T\u00ecm chi\u1ec1u r\u1ed9ng khi bi\u1ebft di\u1ec7n t\u00edch v\u00e0 chi\u1ec1u d\u00e0i\">B\u00e0i t\u1eadp 2: T\u00ecm chi\u1ec1u r\u1ed9ng khi bi\u1ebft di\u1ec7n t\u00edch v\u00e0 chi\u1ec1u d\u00e0i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Bai_tap_3_Bai_toan_thuc_te\" title=\"B\u00e0i t\u1eadp 3: B\u00e0i to\u00e1n th\u1ef1c t\u1ebf\">B\u00e0i t\u1eadp 3: B\u00e0i to\u00e1n th\u1ef1c t\u1ebf<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Ung_dung_thuc_te_cua_tinh_dien_tich_hinh_chu_nhat\" title=\"\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/phongvu.vn\/cong-nghe\/cong-thuc-tinh-dien-tich-hinh-chu-nhat\/#Tong_ket\" title=\"T\u1ed5ng k\u1ebft\">T\u1ed5ng k\u1ebft<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Dinh_nghia\"><\/span><a><\/a><strong>\u0110\u1ecbnh ngh\u0129a<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Tr\u01b0\u1edbc khi \u0111i v\u00e0o t\u00ecm hi\u1ec3u c\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt, h\u00e3y c\u00f9ng kh\u00e1m ph\u00e1 th\u00eam v\u1ec1 \u0111\u1ecbnh ngh\u0129a c\u1ee7a h\u00ecnh h\u1ecdc n\u00e0y nh\u00e9!<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Hinh_chu_nhat_la_gi\"><\/span><a><\/a><strong>H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"640\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-1024x640.jpg\" alt=\"H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 t\u1ee9 gi\u00e1c c\u00f3 b\u1ed1n g\u00f3c vu\u00f4ng\" class=\"wp-image-121641\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-1024x640.jpg 1024w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6-1344x840.jpg 1344w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-6.jpg 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" title=\"\"><figcaption class=\"wp-element-caption\">H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 t\u1ee9 gi\u00e1c c\u00f3 b\u1ed1n g\u00f3c vu\u00f4ng<\/figcaption><\/figure>\n\n\n\n<p>H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 m\u1ed9t <strong>h\u00ecnh t\u1ee9 gi\u00e1c c\u00f3 b\u1ed1n g\u00f3c vu\u00f4ng (90\u00b0)<\/strong>. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n nh\u1ea5t v\u00e0 ph\u1ed5 bi\u1ebfn nh\u1ea5t trong to\u00e1n h\u1ecdc. H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 hai c\u1eb7p c\u1ea1nh song song v\u00e0 b\u1eb1ng nhau, v\u1edbi c\u1eb7p c\u1ea1nh th\u1ee9 nh\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 chi\u1ec1u d\u00e0i, v\u00e0 c\u1eb7p c\u1ea1nh th\u1ee9 hai \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 chi\u1ec1u r\u1ed9ng.<\/p>\n\n\n\n<p>Trong h\u1ec7 t\u1ecda \u0111\u1ed9 Descartes, m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi b\u1ed1n \u0111i\u1ec3m sao cho c\u00e1c c\u1ea1nh c\u1ee7a n\u00f3 song song v\u1edbi c\u00e1c tr\u1ee5c t\u1ecda \u0111\u1ed9. V\u00ed d\u1ee5, m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 th\u1ec3 c\u00f3 c\u00e1c \u0111\u1ec9nh t\u1ea1i c\u00e1c \u0111i\u1ec3m (0,0), (a,0), (a,b) v\u00e0 (0,b), trong \u0111\u00f3 a l\u00e0 chi\u1ec1u d\u00e0i v\u00e0 b l\u00e0 chi\u1ec1u r\u1ed9ng.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Tinh_chat_cua_hinh_chu_nhat\"><\/span><a><\/a><strong>T\u00ednh ch\u1ea5t c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"640\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-1024x640.jpg\" alt=\"H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 2 c\u1eb7p c\u1ea1nh song song b\u1eb1ng nhau\" class=\"wp-image-121638\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-1024x640.jpg 1024w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3-1344x840.jpg 1344w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-3.jpg 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" title=\"\"><figcaption class=\"wp-element-caption\">H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 2 c\u1eb7p c\u1ea1nh song song b\u1eb1ng nhau<\/figcaption><\/figure>\n\n\n\n<p>H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 nhi\u1ec1u t\u00ednh ch\u1ea5t \u0111\u1eb7c bi\u1ec7t, trong \u0111\u00f3 bao g\u1ed3m:<\/p>\n\n\n\n<ul>\n<li><strong>B\u1ed1n g\u00f3c vu\u00f4ng<\/strong>: \u0110\u1eb7c \u0111i\u1ec3m quan tr\u1ecdng nh\u1ea5t c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 t\u1ea5t c\u1ea3 c\u00e1c g\u00f3c \u0111\u1ec1u b\u1eb1ng 90\u00b0.<\/li>\n\n\n\n<li><strong>Hai c\u1eb7p c\u1ea1nh song song v\u00e0 b\u1eb1ng nhau<\/strong>: C\u00e1c c\u1ea1nh \u0111\u1ed1i di\u1ec7n c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt song song v\u00e0 b\u1eb1ng nhau.<\/li>\n\n\n\n<li><strong>Hai \u0111\u01b0\u1eddng ch\u00e9o b\u1eb1ng nhau<\/strong>: Hai \u0111\u01b0\u1eddng ch\u00e9o c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 c\u00f9ng \u0111\u1ed9 d\u00e0i v\u00e0 c\u1eaft nhau t\u1ea1i trung \u0111i\u1ec3m c\u1ee7a ch\u00fang.<\/li>\n\n\n\n<li><strong>\u0110\u1ed1i x\u1ee9ng tr\u1ee5c<\/strong>: H\u00ecnh ch\u1eef nh\u1eadt c\u00f3 b\u1ed1n tr\u1ee5c \u0111\u1ed1i x\u1ee9ng &#8211; hai tr\u1ee5c \u0111i qua c\u00e1c c\u1eb7p c\u1ea1nh \u0111\u1ed1i di\u1ec7n v\u00e0 hai tr\u1ee5c \u0111i qua c\u00e1c c\u1eb7p \u0111\u1ec9nh \u0111\u1ed1i di\u1ec7n.<\/li>\n\n\n\n<li><strong>H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t c\u1ee7a h\u00ecnh b\u00ecnh h\u00e0nh<\/strong>: M\u1ecdi h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ec1u l\u00e0 h\u00ecnh b\u00ecnh h\u00e0nh, nh\u01b0ng kh\u00f4ng ph\u1ea3i m\u1ecdi h\u00ecnh b\u00ecnh h\u00e0nh \u0111\u1ec1u l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt.<\/li>\n\n\n\n<li><strong>H\u00ecnh vu\u00f4ng l\u00e0 tr\u01b0\u1eddng h\u1ee3p \u0111\u1eb7c bi\u1ec7t c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt<\/strong>: Khi chi\u1ec1u d\u00e0i b\u1eb1ng chi\u1ec1u r\u1ed9ng, h\u00ecnh ch\u1eef nh\u1eadt tr\u1edf th\u00e0nh h\u00ecnh vu\u00f4ng.<\/li>\n<\/ul>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_dien_tich_hinh_chu_nhat\"><\/span><a><\/a><strong>C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"640\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-1024x640.jpg\" alt=\"C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt\" class=\"wp-image-121640\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-1024x640.jpg 1024w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5-1344x840.jpg 1344w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-5.jpg 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" title=\"\"><figcaption class=\"wp-element-caption\">C\u00f4ng th\u1ee9c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt<\/figcaption><\/figure>\n\n\n\n<p>Di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 t\u00edch c\u1ee7a chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u r\u1ed9ng. C\u00f4ng th\u1ee9c n\u00e0y r\u1ea5t \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 \u00e1p d\u1ee5ng:<\/p>\n\n\n\n<p><strong>S = a \u00d7 b<\/strong><\/p>\n\n\n\n<p>Trong \u0111\u00f3:<\/p>\n\n\n\n<ul>\n<li>S l\u00e0 di\u1ec7n t\u00edch c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt<\/li>\n\n\n\n<li>a l\u00e0 chi\u1ec1u d\u00e0i c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt<\/li>\n\n\n\n<li>b l\u00e0 chi\u1ec1u r\u1ed9ng c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt<\/li>\n<\/ul>\n\n\n\n<p>V\u00ed d\u1ee5, n\u1ebfu m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u d\u00e0i 5cm v\u00e0 chi\u1ec1u r\u1ed9ng 3cm, di\u1ec7n t\u00edch c\u1ee7a n\u00f3 s\u1ebd l\u00e0: <strong>S = 5cm \u00d7 3cm = 15cm\u00b2<\/strong><\/p>\n\n\n\n<p>\u0110\u01a1n v\u1ecb c\u1ee7a di\u1ec7n t\u00edch lu\u00f4n l\u00e0 \u0111\u01a1n v\u1ecb chi\u1ec1u d\u00e0i b\u00ecnh ph\u01b0\u01a1ng (nh\u01b0 m\u00b2, cm\u00b2, km\u00b2, &#8230;).<\/p>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Cac_bai_tap_co_loi_giai\"><\/span><a><\/a><strong>C\u00e1c b\u00e0i t\u1eadp c\u00f3 l\u1eddi gi\u1ea3i<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Bai_tap_1_Tinh_dien_tich_co_ban\"><\/span><a><\/a><strong>B\u00e0i t\u1eadp 1: T\u00ednh di\u1ec7n t\u00edch c\u01a1 b\u1ea3n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"640\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-1024x640.jpg\" alt=\"B\u00e0i t\u1eadp v\u1ec1 c\u00e1ch t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt\" class=\"wp-image-121639\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-1024x640.jpg 1024w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4-1344x840.jpg 1344w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-4.jpg 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" title=\"\"><figcaption class=\"wp-element-caption\">B\u00e0i t\u1eadp v\u1ec1 c\u00e1ch t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt<\/figcaption><\/figure>\n\n\n\n<p><strong>\u0110\u1ec1 b\u00e0i<\/strong>: T\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u d\u00e0i 12m v\u00e0 chi\u1ec1u r\u1ed9ng 8m.<\/p>\n\n\n\n<p><strong>L\u1eddi gi\u1ea3i<\/strong>:<\/p>\n\n\n\n<ul>\n<li>\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c S = a \u00d7 b<\/li>\n\n\n\n<li>S = 12m \u00d7 8m = 96m\u00b2<\/li>\n<\/ul>\n\n\n\n<p>V\u1eady di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 96m\u00b2.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Bai_tap_2_Tim_chieu_rong_khi_biet_dien_tich_va_chieu_dai\"><\/span><a><\/a><strong>B\u00e0i t\u1eadp 2: T\u00ecm chi\u1ec1u r\u1ed9ng khi bi\u1ebft di\u1ec7n t\u00edch v\u00e0 chi\u1ec1u d\u00e0i<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0110\u1ec1 b\u00e0i<\/strong>: M\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 di\u1ec7n t\u00edch 45cm\u00b2 v\u00e0 chi\u1ec1u d\u00e0i 9cm. T\u00ecm chi\u1ec1u r\u1ed9ng c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt.<\/p>\n\n\n\n<p><strong>L\u1eddi gi\u1ea3i<\/strong>:<\/p>\n\n\n\n<ul>\n<li>\u00c1p d\u1ee5ng c\u00f4ng th\u1ee9c S = a \u00d7 b<\/li>\n\n\n\n<li>45cm\u00b2 = 9cm \u00d7 b<\/li>\n\n\n\n<li>b = 45cm\u00b2 \u00f7 9cm = 5cm<\/li>\n<\/ul>\n\n\n\n<p>V\u1eady chi\u1ec1u r\u1ed9ng c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 5cm.<\/p>\n\n\n\n<h3><span class=\"ez-toc-section\" id=\"Bai_tap_3_Bai_toan_thuc_te\"><\/span><a><\/a><strong>B\u00e0i t\u1eadp 3: B\u00e0i to\u00e1n th\u1ef1c t\u1ebf<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p><strong>\u0110\u1ec1 b\u00e0i<\/strong>: M\u1ed9t m\u1ea3nh \u0111\u1ea5t h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 chi\u1ec1u d\u00e0i 25m v\u00e0 chi\u1ec1u r\u1ed9ng 15m. Ng\u01b0\u1eddi ta mu\u1ed1n l\u00e1t g\u1ea1ch l\u00ean to\u00e0n b\u1ed9 m\u1ea3nh \u0111\u1ea5t, m\u1ed7i vi\u00ean g\u1ea1ch c\u00f3 di\u1ec7n t\u00edch 0,25m\u00b2. H\u1ecfi c\u1ea7n bao nhi\u00eau vi\u00ean g\u1ea1ch?<\/p>\n\n\n\n<p><strong>L\u1eddi gi\u1ea3i<\/strong>:<\/p>\n\n\n\n<ul>\n<li>Di\u1ec7n t\u00edch m\u1ea3nh \u0111\u1ea5t: S = 25m \u00d7 15m = 375m\u00b2<\/li>\n\n\n\n<li>Di\u1ec7n t\u00edch m\u1ed9t vi\u00ean g\u1ea1ch: 0,25m\u00b2<\/li>\n\n\n\n<li>S\u1ed1 vi\u00ean g\u1ea1ch c\u1ea7n thi\u1ebft = 375m\u00b2 \u00f7 0,25m\u00b2 = 1.500 vi\u00ean<\/li>\n<\/ul>\n\n\n\n<p>V\u1eady c\u1ea7n 1.500 vi\u00ean g\u1ea1ch \u0111\u1ec3 l\u00e1t to\u00e0n b\u1ed9 m\u1ea3nh \u0111\u1ea5t.<\/p>\n\n\n\n<div class=\"pv-products-card\"><div class=\"pv-products-title\"><div>Tham kh\u1ea3o ngay m\u1ed9t s\u1ed1 Laptop n\u1ed5i b\u1eadt t\u1ea1i Phong V\u0169<\/div><\/div><div class=\"pv-products\" data-type=\"carousel\" data-key=\"product-area\" data-skus=\"241101675,241102981,250116531,250116532,250116533\"><\/div><\/div>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Ung_dung_thuc_te_cua_tinh_dien_tich_hinh_chu_nhat\"><\/span><a><\/a><strong>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" loading=\"lazy\" width=\"1024\" height=\"640\" src=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-1024x640.jpg\" alt=\"C\u00e1ch t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nhi\u1ec1u trong th\u1ef1c ti\u1ec5n\" class=\"wp-image-121642\" srcset=\"https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-1024x640.jpg 1024w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-300x188.jpg 300w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-768x480.jpg 768w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-150x94.jpg 150w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-600x375.jpg 600w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-696x435.jpg 696w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-1392x870.jpg 1392w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-1068x668.jpg 1068w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-672x420.jpg 672w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2-1344x840.jpg 1344w, https:\/\/phongvu.vn\/cong-nghe\/wp-content\/uploads\/2025\/03\/dien-tich-hinh-chu-nhat-2.jpg 1440w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" title=\"\"><figcaption class=\"wp-element-caption\">C\u00e1ch t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng nhi\u1ec1u trong th\u1ef1c ti\u1ec5n<\/figcaption><\/figure>\n\n\n\n<p>Vi\u1ec7c t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt c\u00f3 r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng trong \u0111\u1eddi s\u1ed1ng h\u00e0ng ng\u00e0y v\u00e0 trong nhi\u1ec1u l\u0129nh v\u1ef1c kh\u00e1c nhau:<\/p>\n\n\n\n<ul>\n<li><strong>X\u00e2y d\u1ef1ng v\u00e0 ki\u1ebfn tr\u00fac<\/strong>: Khi x\u00e2y d\u1ef1ng nh\u00e0 c\u1eeda, t\u00f2a nh\u00e0, ng\u01b0\u1eddi ta c\u1ea7n t\u00ednh di\u1ec7n t\u00edch s\u00e0n, di\u1ec7n t\u00edch t\u01b0\u1eddng, di\u1ec7n t\u00edch m\u00e1i \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh l\u01b0\u1ee3ng v\u1eadt li\u1ec7u c\u1ea7n thi\u1ebft v\u00e0 chi ph\u00ed x\u00e2y d\u1ef1ng.<\/li>\n\n\n\n<li><strong>N\u00f4ng nghi\u1ec7p<\/strong>: N\u00f4ng d\u00e2n c\u1ea7n bi\u1ebft di\u1ec7n t\u00edch \u0111\u1ea5t canh t\u00e1c \u0111\u1ec3 t\u00ednh to\u00e1n l\u01b0\u1ee3ng gi\u1ed1ng, ph\u00e2n b\u00f3n, thu\u1ed1c b\u1ea3o v\u1ec7 th\u1ef1c v\u1eadt c\u1ea7n s\u1eed d\u1ee5ng.<\/li>\n\n\n\n<li><strong>Thi\u1ebft k\u1ebf n\u1ed9i th\u1ea5t<\/strong>: Khi trang tr\u00ed nh\u00e0 c\u1eeda, ng\u01b0\u1eddi ta c\u1ea7n bi\u1ebft di\u1ec7n t\u00edch c\u00e1c ph\u00f2ng \u0111\u1ec3 ch\u1ecdn \u0111\u1ed3 n\u1ed9i th\u1ea5t ph\u00f9 h\u1ee3p, t\u00ednh to\u00e1n l\u01b0\u1ee3ng s\u01a1n, gi\u1ea5y d\u00e1n t\u01b0\u1eddng, g\u1ea1ch l\u00e1t s\u00e0n&#8230;<\/li>\n\n\n\n<li><strong>B\u1ea5t \u0111\u1ed9ng s\u1ea3n<\/strong>: Gi\u00e1 tr\u1ecb c\u1ee7a m\u1ed9t c\u0103n h\u1ed9, m\u1ea3nh \u0111\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u00ednh d\u1ef1a tr\u00ean di\u1ec7n t\u00edch c\u1ee7a n\u00f3.<\/li>\n\n\n\n<li><strong>C\u00f4ng nghi\u1ec7p<\/strong>: Trong s\u1ea3n xu\u1ea5t, di\u1ec7n t\u00edch \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u00ednh to\u00e1n v\u1eadt li\u1ec7u c\u1ea7n thi\u1ebft cho m\u1ed9t s\u1ea3n ph\u1ea9m, nh\u01b0 di\u1ec7n t\u00edch v\u1ea3i \u0111\u1ec3 may qu\u1ea7n \u00e1o, di\u1ec7n t\u00edch kim lo\u1ea1i \u0111\u1ec3 l\u00e0m th\u00e2n xe&#8230;<\/li>\n\n\n\n<li><strong>Gi\u00e1o d\u1ee5c<\/strong>: Trong d\u1ea1y h\u1ecdc, di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng \u0111\u1ec3 h\u1ecdc sinh ti\u1ebfp c\u1eadn v\u1edbi c\u00e1c kh\u00e1i ni\u1ec7m ph\u1ee9c t\u1ea1p h\u01a1n trong h\u00ecnh h\u1ecdc.<\/li>\n<\/ul>\n\n\n\n<h2><span class=\"ez-toc-section\" id=\"Tong_ket\"><\/span><a><\/a><strong>T\u1ed5ng k\u1ebft<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m c\u01a1 b\u1ea3n nh\u01b0ng v\u00f4 c\u00f9ng quan tr\u1ecdng trong to\u00e1n h\u1ecdc. V\u1edbi c\u00f4ng th\u1ee9c \u0111\u01a1n gi\u1ea3n S = a \u00d7 b, ta c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng t\u00ednh \u0111\u01b0\u1ee3c di\u1ec7n t\u00edch c\u1ee7a b\u1ea5t k\u1ef3 h\u00ecnh ch\u1eef nh\u1eadt n\u00e0o khi bi\u1ebft chi\u1ec1u d\u00e0i v\u00e0 chi\u1ec1u r\u1ed9ng c\u1ee7a n\u00f3.<\/p>\n\n\n\n<p>Vi\u1ec7c hi\u1ec3u r\u00f5 v\u00e0 th\u00e0nh th\u1ea1o c\u00e1ch t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt kh\u00f4ng ch\u1ec9 gi\u00fap ch\u00fang ta gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i to\u00e1n trong tr\u01b0\u1eddng h\u1ecdc m\u00e0 c\u00f2n c\u00f3 \u1ee9ng d\u1ee5ng r\u1ea5t l\u1edbn trong cu\u1ed9c s\u1ed1ng h\u00e0ng ng\u00e0y. T\u1eeb vi\u1ec7c t\u00ednh to\u00e1n v\u1eadt li\u1ec7u x\u00e2y d\u1ef1ng, thi\u1ebft k\u1ebf n\u1ed9i th\u1ea5t, cho \u0111\u1ebfn quy ho\u1ea1ch \u0111\u00f4 th\u1ecb, ki\u1ebfn th\u1ee9c v\u1ec1 di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt \u0111\u1ec1u c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>H\u00ecnh ch\u1eef nh\u1eadt l\u00e0 m\u1ed9t trong nh\u1eefng h\u00ecnh h\u1ecdc c\u01a1 b\u1ea3n nh\u1ea5t m\u00e0 ch\u00fang ta b\u1eaft \u0111\u1ea7u h\u1ecdc t\u1eeb nh\u1eefng n\u0103m \u0111\u1ea7u ti\u00ean trong tr\u01b0\u1eddng h\u1ecdc. \u0110\u00e2y kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m to\u00e1n h\u1ecdc \u0111\u01a1n thu\u1ea7n m\u00e0 c\u00f2n l\u00e0 n\u1ec1n t\u1ea3ng cho vi\u1ec7c hi\u1ec3u v\u00e0 gi\u1ea3i quy\u1ebft nhi\u1ec1u v\u1ea5n \u0111\u1ec1 th\u1ef1c ti\u1ec5n. T\u1eeb vi\u1ec7c [&hellip;]<\/p>\n","protected":false},"author":28,"featured_media":121637,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false},"categories":[24],"tags":[],"_links":{"self":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts\/121635"}],"collection":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/users\/28"}],"replies":[{"embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/comments?post=121635"}],"version-history":[{"count":4,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts\/121635\/revisions"}],"predecessor-version":[{"id":121887,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/posts\/121635\/revisions\/121887"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/media\/121637"}],"wp:attachment":[{"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/media?parent=121635"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/categories?post=121635"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/phongvu.vn\/cong-nghe\/wp-json\/wp\/v2\/tags?post=121635"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}