{"id":27470,"date":"2025-07-12T13:35:20","date_gmt":"2025-07-12T06:35:20","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=27470"},"modified":"2025-07-14T13:35:54","modified_gmt":"2025-07-14T06:35:54","slug":"goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/","title":{"rendered":"G\u00f3c nh\u1ecdn l\u00e0 g\u00ec? T\u1ea5t t\u1ea7n t\u1eadt ki\u1ebfn th\u1ee9c chi ti\u1ebft v\u1ec1 g\u00f3c nh\u1ecdn c\u1ee7a h\u00ecnh h\u1ecdc"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 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\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Goc_sac_net_la_gi\" >G\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Dac_diem_thuoc_tinh_cua_cac_goc_sac_net\" >\u0110\u1eb7c \u0111i\u1ec3m thu\u1ed9c t\u00ednh c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Cach_xac_dinh_gia_tri_goc_cua_goc_nhon\" >C\u00e1ch x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb g\u00f3c c\u1ee7a g\u00f3c nh\u1ecdn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Ap_dung_cac_thuoc_tinh_cua_goc\" >\u00c1p d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Su_dung_mot_thuoc_do_goc_hoac_ello\" >S\u1eed d\u1ee5ng m\u1ed9t th\u01b0\u1edbc \u0111o g\u00f3c ho\u1eb7c ello<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Cac_hinh_thuc_toan_hoc_cua_cac_goc_sac_net_pho_bien\" >C\u00e1c h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t ph\u1ed5 bi\u1ebfn<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Mau_1_Xac_dinh_goc_sac_net_voi_cac_goc_khac\" >M\u1eabu 1: X\u00e1c \u0111\u1ecbnh g\u00f3c s\u1eafc n\u00e9t v\u1edbi c\u00e1c g\u00f3c kh\u00e1c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Mau_2_Viet_ten_cua_cac_goc_sac_net_trong_buc_tranh_da_cho\" >M\u1eabu 2: Vi\u1ebft t\u00ean c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t trong b\u1ee9c tranh \u0111\u00e3 cho<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Mau_3_Ve_hinh_anh_tuong_ung_voi_goc_sac_net\" >M\u1eabu 3: V\u1ebd h\u00ecnh \u1ea3nh t\u01b0\u01a1ng \u1ee9ng v\u1edbi g\u00f3c s\u1eafc n\u00e9t<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Bi_quyet_hoc_tap_va_ghi_nho_kien_thuc_goc_sac_net_mot_cach_hieu_qua\" >B\u00ed quy\u1ebft h\u1ecdc t\u1eadp v\u00e0 ghi nh\u1edb ki\u1ebfn th\u1ee9c g\u00f3c s\u1eafc n\u00e9t m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Xay_dung_mot_nen_tang_toan_hoc_vung_chac_cho_tre_em_voi_toan_hoc_khi\" >X\u00e2y d\u1ef1ng m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Lay_mot_vi_du_ve_goc_sac_net_thong_qua_thuc_hanh_tro_choi\" >L\u1ea5y m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 g\u00f3c s\u1eafc n\u00e9t th\u00f4ng qua th\u1ef1c h\u00e0nh, tr\u00f2 ch\u01a1i<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Voi_em_be_cua_ban_thuc_hanh_thuong_xuyen_la_khong_the_thieu\" >V\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Mot_so_bai_tap_ve_goc_toan_lop_4_de_tre_thuc_hanh\" >M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 g\u00f3c to\u00e1n l\u1edbp 4 \u0111\u1ec3 tr\u1ebb th\u1ef1c h\u00e0nh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/www.ckconitsha.com\/vn\/goc-nhon-la-gi-tat-tan-tat-kien-thuc-chi-tiet-ve-goc-nhon-cua-hinh-hoc\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p>G\u00f3c nh\u1ecdn l\u00e0 m\u1ed9t trong nh\u1eefng th\u1ec3 lo\u1ea1i g\u00f3c c\u1ee7a h\u00ecnh h\u1ecdc. Ki\u1ebfn th\u1ee9c n\u00e0y h\u1ecd s\u1ebd h\u1ecdc trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 4, c\u00f9ng v\u1edbi nhi\u1ec1u th\u1ec3 lo\u1ea1i g\u00f3c kh\u00e1c. V\u00ec v\u1eady, \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 g\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00ec? \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a lo\u1ea1i g\u00f3c n\u00e0y, h\u00e3y \u0111\u1ec3 kh\u1ec9 kh\u00e1m ph\u00e1 r\u00f5 h\u01a1n trong b\u00e0i vi\u1ebft sau.<\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Goc_sac_net_la_gi\"><\/span>G\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00ec?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong t\u1ea5t c\u1ea3 c\u00e1c h\u00ecnh \u1ea3nh trong to\u00e1n h\u1ecdc, m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u bi\u1ebft r\u1eb1ng m\u1ed7i b\u1ee9c \u1ea3nh \u0111\u01b0\u1ee3c t\u1ea1o th\u00e0nh t\u1eeb c\u00e1c g\u00f3c v\u00e0 \u0111\u1ec9nh. \u0110i\u1ec3n h\u00ecnh nh\u1ea5t l\u00e0 g\u00f3c s\u1eafc n\u00e9t, th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong c\u00e1c h\u00ecnh d\u1ea1ng nh\u01b0 h\u00ecnh thoi, h\u00ecnh b\u00ecnh h\u00e0nh, t\u1ee9 gi\u00e1c, tam gi\u00e1c &#8230;<\/p>\n<p dir=\"ltr\">Trong to\u00e1n h\u1ecdc, g\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00f3c \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb hai \u0111\u01b0\u1eddng th\u1eb3ng c\u00f3 c\u00f9ng giao \u0111i\u1ec3m trong b\u1ea5t k\u1ef3 h\u00ecnh tam gi\u00e1c ho\u1eb7c trong m\u1eb7t ph\u1eb3ng. Gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c s\u1eafc n\u00e9t th\u01b0\u1eddng d\u01b0\u1edbi 90 \u00b0, ch\u00fang th\u01b0\u1eddng n\u1eb1m trong ph\u1ea1m vi&gt; 0 v\u00e0 &lt;90 \u00b0. M\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng EKE \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb g\u00f3c s\u1eafc n\u00e9t c\u1ee7a h\u00ecnh \u1ea3nh ho\u1eb7c \u0111\u1ec3 ph\u00e2n bi\u1ec7t n\u00f3 v\u1edbi c\u00e1c h\u00ecnh \u1ea3nh kh\u00e1c.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-1.jpg\" alt=\"H\u00ecnh \u1ea3nh c\u1ee7a g\u00f3c nh\u1ecdn. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Dac_diem_thuoc_tinh_cua_cac_goc_sac_net\"><\/span>\u0110\u1eb7c \u0111i\u1ec3m thu\u1ed9c t\u00ednh c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">G\u00f3c s\u1eafc n\u00e9t th\u01b0\u1eddng s\u1ebd c\u00f3 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m thu\u1ed9c t\u00ednh sau:<\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">G\u00f3c s\u1eafc n\u00e9t s\u1ebd \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh b\u1edfi hai \u0111\u01b0\u1eddng th\u1eb3ng ho\u1eb7c \u0111\u01b0\u1eddng th\u1eb3ng giao nhau v\u1edbi m\u1ed9t g\u00f3c nh\u1ecf h\u01a1n 90 \u00b0<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">G\u00f3c s\u1eafc n\u00e9t s\u1ebd nh\u1ecf h\u01a1n g\u00f3c vu\u00f4ng.<\/p>\n<\/li>\n<\/ul>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cach_xac_dinh_gia_tri_goc_cua_goc_nhon\"><\/span>C\u00e1ch x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb g\u00f3c c\u1ee7a g\u00f3c nh\u1ecdn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c s\u1eafc n\u00e9t s\u1ebd ph\u1ee5 thu\u1ed9c v\u00e0o t\u1eebng lo\u1ea1i h\u1ecdc t\u1eadp. Nh\u01b0ng v\u1ec1 c\u01a1 b\u1ea3n bao g\u1ed3m c\u00e1c c\u00e1ch sau:<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-2.jpg\" alt=\"\u00c1p d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 ph\u00e9p \u0111o g\u00f3c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb g\u00f3c nh\u1ecdn. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_dung_cac_thuoc_tinh_cua_goc\"><\/span>\u00c1p d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u00c1p d\u1ee5ng c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c tr\u00ean, m\u1ecdi ng\u01b0\u1eddi c\u00f3 th\u1ec3 nh\u1eadn th\u1ea5y r\u1eb1ng v\u1edbi g\u00f3c s\u1eafc n\u00e9t lu\u00f4n c\u00f3 s\u1ed1 \u0111o nh\u1ecf h\u01a1n 90 \u00b0, c\u00f3 ngh\u0129a l\u00e0 nh\u1ecf h\u01a1n g\u00f3c vu\u00f4ng. V\u00ec v\u1eady, v\u1edbi h\u00ecnh \u1ea3nh c\u00f3 g\u00f3c nh\u1ecf h\u01a1n, b\u1ea1n c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh r\u1eb1ng \u0111\u00f3 l\u00e0 m\u1ed9t g\u00f3c s\u1eafc n\u00e9t.<\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: T\u00f9y thu\u1ed9c v\u00e0o h\u00ecnh h\u1ecdc v\u00e0 gi\u1ea3 thuy\u1ebft c\u1ee7a m\u1ed7i b\u00e0i t\u1eadp, ch\u00fang s\u1ebd suy ra c\u00e1c gi\u00e1 tr\u1ecb g\u00f3c t\u01b0\u01a1ng \u1ee9ng c\u1ee7a h\u00ecnh \u1ea3nh ch\u00ednh x\u00e1c.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Su_dung_mot_thuoc_do_goc_hoac_ello\"><\/span>S\u1eed d\u1ee5ng m\u1ed9t th\u01b0\u1edbc \u0111o g\u00f3c ho\u1eb7c ello<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Bi\u1ec7n ph\u00e1p Eke ho\u1eb7c G\u00f3c l\u00e0 c\u00e1c c\u00f4ng c\u1ee5 h\u1ed7 tr\u1ee3 gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c ch\u00ednh x\u00e1c nh\u1ea5t b\u1eb1ng bao nhi\u00eau \u0111\u1ed9. H\u1ecd c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o \u0111\u1ec3 \u0111o gi\u00e1 tr\u1ecb c\u1ee7a g\u00f3c, n\u1ebfu d\u01b0\u1edbi 90 \u00b0 l\u00e0 g\u00f3c s\u1eafc n\u00e9t.<\/p>\n<p dir=\"ltr\">\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cac_hinh_thuc_toan_hoc_cua_cac_goc_sac_net_pho_bien\"><\/span>C\u00e1c h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t ph\u1ed5 bi\u1ebfn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">Trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc c\u01a1 b\u1ea3n, tr\u1ebb em s\u1ebd \u0111\u01b0\u1ee3c l\u00e0m quen v\u00e0 gi\u1ea3i quy\u1ebft c\u00e1c lo\u1ea1i b\u00e0i t\u1eadp li\u00ean quan \u0111\u1ebfn g\u00f3c s\u1eafc n\u00e9t nh\u01b0 sau:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_1_Xac_dinh_goc_sac_net_voi_cac_goc_khac\"><\/span>M\u1eabu 1: X\u00e1c \u0111\u1ecbnh g\u00f3c s\u1eafc n\u00e9t v\u1edbi c\u00e1c g\u00f3c kh\u00e1c<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Ch\u00fang t\u00f4i s\u1ebd d\u1ef1a v\u00e0o b\u1ea3n ch\u1ea5t v\u00e0 \u0111\u1ecbnh ngh\u0129a c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u1edbi c\u00e1c g\u00f3c kh\u00e1c m\u1ed9t c\u00e1ch d\u1ec5 d\u00e0ng.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Trong c\u00e1c h\u00ecnh \u1ea3nh sau, g\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00ec?<\/em><\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-3.jpg\" alt=\"\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>Gi\u1ea3i ph\u00e1p: D\u1ef1a tr\u00ean c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00f3c&gt; 0 v\u00e0 &lt;90 \u00b0, ch\u00fang ta th\u1ea5y:<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 1: \u0110o g\u00f3c = 0<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 2: \u0110o g\u00f3c &lt;90 \u00b0<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 3: \u0110o g\u00f3c = 90 \u00b0<\/em><\/p>\n<p dir=\"ltr\"><em>H\u00ecnh 4: \u0110o g\u00f3c&gt; 90 \u00b0<\/em><\/p>\n<p dir=\"ltr\"><em>=&gt; H\u00ecnh 2 l\u00e0 m\u1ed9t g\u00f3c s\u1eafc n\u00e9t.<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_2_Viet_ten_cua_cac_goc_sac_net_trong_buc_tranh_da_cho\"><\/span>M\u1eabu 2: Vi\u1ebft t\u00ean c\u1ee7a c\u00e1c g\u00f3c s\u1eafc n\u00e9t trong b\u1ee9c tranh \u0111\u00e3 cho<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: Ch\u00fang t\u00f4i s\u1ebd d\u1ef1a v\u00e0o c\u00e1c thu\u1ed9c t\u00ednh c\u1ee7a g\u00f3c \u0111\u1ec3 \u0111\u1ecdc t\u00ean ch\u00ednh x\u00e1c c\u1ee7a g\u00f3c v\u00e0 c\u00e1c m\u1eb7t li\u00ean quan.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: Vi\u1ebft t\u00ean g\u00f3c s\u1eafc v\u00e0 c\u00e1c c\u1ea1nh c\u1ee7a h\u00ecnh ch\u00ednh x\u00e1c<\/em><\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-4.jpg\" alt=\"\" width=\"100%\"><\/p>\n<p dir=\"ltr\"><em>Gi\u1ea3i ph\u00e1p: H\u00ecnh tr\u00ean c\u00f3 g\u00f3c o, ON v\u00e0 OM<\/em><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mau_3_Ve_hinh_anh_tuong_ung_voi_goc_sac_net\"><\/span>M\u1eabu 3: V\u1ebd h\u00ecnh \u1ea3nh t\u01b0\u01a1ng \u1ee9ng v\u1edbi g\u00f3c s\u1eafc n\u00e9t<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Gi\u1ea3i ph\u00e1p: D\u1ef1a tr\u00ean c\u00e1c y\u00eau c\u1ea7u c\u1ee7a v\u1ea5n \u0111\u1ec1, \u0111\u1ec3 tr\u1ebb s\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o g\u00f3c ho\u1eb7c EKE \u0111\u1ec3 v\u1ebd g\u00f3c s\u1eafc n\u00e9t t\u01b0\u01a1ng \u1ee9ng v\u1edbi ph\u00e9p \u0111o g\u00f3c t\u01b0\u01a1ng \u1ee9ng \u0111\u01b0\u1ee3c \u0111\u01b0a ra.<\/p>\n<p dir=\"ltr\"><em>V\u00ed d\u1ee5: V\u1ebd g\u00f3c nh\u1ecdn o, ox, oy v\u1edbi ph\u00e9p \u0111o g\u00f3c t\u01b0\u01a1ng \u1ee9ng b\u1eb1ng 70 \u0111\u1ed9.<\/em><\/p>\n<p dir=\"ltr\"><em>Ph\u1ea7n th\u01b0\u1edfng:<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 1: Ch\u00fang t\u00f4i v\u1ebd Ox \u0111\u01b0\u1eddng th\u1eb3ng<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 2: S\u1eed d\u1ee5ng th\u01b0\u1edbc \u0111o g\u00f3c ngang b\u1eb1ng v\u1edbi Ox \u0111\u01b0\u1eddng th\u1eb3ng, \u0111i\u1ec3m 0 \u0111\u1ed9 tr\u00ean th\u01b0\u1edbc \u0111o s\u1ebd \u0111\u01b0\u1ee3c \u0111\u1eb7t ngay l\u1eadp t\u1ee9c O.<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 3: Ti\u1ebfn h\u00e0nh x\u00e1c \u0111\u1ecbnh \u0111i\u1ec3m 70 \u0111\u1ed9 tr\u00ean th\u01b0\u1edbc \u0111o t\u01b0\u01a1ng \u1ee9ng<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 4: K\u1ebft n\u1ed1i \u0111\u1ec9nh O v\u1edbi \u0111i\u1ec3m nh\u1ecdn \u1edf b\u01b0\u1edbc 3 s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u01b0\u1eddng OY.<\/em><\/p>\n<p dir=\"ltr\"><em>B\u01b0\u1edbc 5: Ch\u00fang t\u00f4i c\u00f3 \u0111\u01b0\u1ee3c g\u00f3c s\u1eafc AOB = 70 \u0111\u1ed9.<\/em><\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-5.jpg\" alt=\"\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Bi_quyet_hoc_tap_va_ghi_nho_kien_thuc_goc_sac_net_mot_cach_hieu_qua\"><\/span>B\u00ed quy\u1ebft h\u1ecdc t\u1eadp v\u00e0 ghi nh\u1edb ki\u1ebfn th\u1ee9c g\u00f3c s\u1eafc n\u00e9t m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ed1i v\u1edbi ki\u1ebfn th\u1ee9c g\u00f3c s\u1eafc n\u00e9t trong to\u00e1n h\u1ecdc c\u0169ng kh\u00e1 \u0111\u01a1n gi\u1ea3n, ch\u1ee7 y\u1ebfu l\u00e0 t\u1ef1 nhi\u00ean \u0111\u1ec3 gi\u00fap h\u1ecdc sinh x\u00e1c \u0111\u1ecbnh c\u00e1c g\u00f3c c\u01a1 b\u1ea3n trong h\u00ecnh h\u1ecdc. Nh\u01b0ng \u0111\u00f3 l\u00e0 n\u1ec1n t\u1ea3ng \u0111\u1ec3 h\u1ecdc ki\u1ebfn th\u1ee9c cao h\u01a1n. V\u00ec v\u1eady, \u0111\u1ec3 gi\u00fap tr\u1ebb l\u00e0m ch\u1ee7 ki\u1ebfn th\u1ee9c n\u00e0y, c\u0169ng nh\u01b0 t\u00ecm hi\u1ec3u th\u00eam c\u00e1c h\u00ecnh th\u1ee9c to\u00e1n h\u1ecdc li\u00ean quan, \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 m\u1eb9o \u0111\u1ec3 ph\u1ee5 huynh \u00e1p d\u1ee5ng:<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Xay_dung_mot_nen_tang_toan_hoc_vung_chac_cho_tre_em_voi_toan_hoc_khi\"><\/span>X\u00e2y d\u1ef1ng m\u1ed9t n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u1eefng ch\u1eafc cho tr\u1ebb em v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn nh\u01b0 l\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a t\u01b0 duy ti\u1ebfng Anh tr\u1ef1c tuy\u1ebfn cho tr\u1ebb m\u1eabu gi\u00e1o v\u00e0 tr\u1ebb em ti\u1ec3u h\u1ecdc. Th\u00f4ng qua \u1ee9ng d\u1ee5ng n\u00e0y, n\u00f3 s\u1ebd gi\u00fap tr\u1ebb l\u00e0m ch\u1ee7 ki\u1ebfn th\u1ee9c n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc hi\u1ec7u qu\u1ea3 nh\u1ea5t, d\u1ef1a tr\u00ean c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00edch c\u1ef1c \u0111\u1ec3 h\u1ed7 tr\u1ee3 l\u1edbp h\u1ecdc v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a tr\u1ebb em t\u1ed1t h\u01a1n.<\/p>\n<p dir=\"ltr\">C\u1ee5 th\u1ec3, Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math \u0111\u00e3 x\u00e2y d\u1ef1ng v\u1edbi m\u1ed9t h\u1ec7 th\u1ed1ng c\u00e1c b\u00e0i h\u1ecdc v\u1edbi h\u01a1n 400 b\u00e0i h\u1ecdc \u0111\u01b0\u1ee3c d\u1ea1y d\u01b0\u1edbi d\u1ea1ng video, h\u00ecnh \u1ea3nh ho\u1ea1t h\u00ecnh h\u00e0i h\u01b0\u1edbc \u0111\u1ec3 h\u1ed7 tr\u1ee3 tr\u1ebb em c\u00f3 \u0111\u01b0\u1ee3c ki\u1ebfn th\u1ee9c theo c\u00e1ch hi\u1ec7u qu\u1ea3 nh\u1ea5t. T\u1ea5t c\u1ea3 n\u1ed9i dung \u0111\u01b0\u1ee3c theo s\u00e1t v\u1edbi h\u01a1n 60 ch\u1ee7 \u0111\u1ec1 to\u00e1n h\u1ecdc, bao g\u1ed3m c\u00e1c l\u0129nh v\u1ef1c h\u00ecnh h\u1ecdc, g\u00f3c, &#8230; v\u00e0 nhi\u1ec1u ki\u1ebfn th\u1ee9c c\u1ed1t l\u00f5i v\u1ec1 to\u00e1n h\u1ecdc \u0111\u1ec3 gi\u00fap tr\u1ebb em n\u1eafm b\u1eaft t\u1eeb khi c\u00f2n nh\u1ecf.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-6.jpg\" alt=\"H\u1ecdc to\u00e1n b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00edch c\u1ef1c v\u1edbi to\u00e1n h\u1ecdc kh\u1ec9. (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">C\u00f9ng v\u1edbi \u0111\u00f3, \u1ee9ng d\u1ee5ng c\u0169ng \u0111\u00e3 x\u00e2y d\u1ef1ng h\u01a1n 10.000 ho\u1ea1t \u0111\u1ed9ng t\u01b0\u01a1ng t\u00e1c \u0111\u1ec3 tr\u1ebb h\u1ecdc to\u00e1n v\u00e0 ch\u01a1i. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p gi\u1ea3ng d\u1ea1y hi\u1ec7u qu\u1ea3 \u0111\u01b0\u1ee3c nhi\u1ec1u gi\u00e1o d\u1ee5c \u00e1p d\u1ee5ng tr\u00ean th\u1ebf gi\u1edbi, gi\u00fap t\u0103ng kh\u1ea3 n\u0103ng ti\u1ebfp thu v\u00e0 k\u00edch th\u00edch t\u01b0 duy n\u00e3o b\u1ed9 c\u1ee7a tr\u1ebb h\u1ecdc to\u00e1n t\u1ed1t h\u01a1n.<\/p>\n<p dir=\"ltr\">Do \u0111\u00f3, cha m\u1eb9 ho\u00e0n to\u00e0n gi\u1ea3m g\u00e1nh n\u1eb7ng khi d\u1ea1y tr\u1ebb h\u1ecdc to\u00e1n \u1edf nh\u00e0. C\u00f9ng v\u1edbi \u0111\u00f3, chi ph\u00ed l\u00e0 \u00edt h\u01a1n 2000 VND\/ng\u00e0y \u0111\u1ec3 c\u1ea3i thi\u1ec7n kh\u1ea3 n\u0103ng v\u00e0 t\u00ecnh y\u00eau c\u1ee7a vi\u1ec7c h\u1ecdc to\u00e1n c\u1ee7a tr\u1ebb em, ch\u1eafc ch\u1eafn m\u1ecdi ph\u1ee5 huynh \u0111\u1ec1u mu\u1ed1n. B\u1ea1n c\u00f3 th\u1ec3 t\u1ea3i xu\u1ed1ng \u1ee9ng d\u1ee5ng mi\u1ec5n ph\u00ed \u0111\u1ec3 tr\u1ea3i nghi\u1ec7m v\u1edbi con b\u1ea1n ngay h\u00f4m nay.<\/p>\n<p dir=\"ltr\">T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math mi\u1ec5n ph\u00ed cho \u0111i\u1ec7n tho\u1ea1i Android<\/p>\n<p dir=\"ltr\">T\u1ea3i xu\u1ed1ng Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef Math mi\u1ec5n ph\u00ed cho \u0111i\u1ec7n tho\u1ea1i iOS<\/p>\n<p dir=\"ltr\" style=\"text-align: center\"><a href=\"https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS\" target=\"_blank\" rel=\"noopener\">https:\/\/www.youtube.com\/watch?v=7DSJPVHFROS<\/a><\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Lay_mot_vi_du_ve_goc_sac_net_thong_qua_thuc_hanh_tro_choi\"><\/span>L\u1ea5y m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 g\u00f3c s\u1eafc n\u00e9t th\u00f4ng qua th\u1ef1c h\u00e0nh, tr\u00f2 ch\u01a1i<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">\u0110\u1ec3 gi\u00fap tr\u1ebb em d\u1ec5 d\u00e0ng t\u01b0\u1edfng t\u01b0\u1ee3ng trong vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u00e1c g\u00f3c s\u1eafc n\u00e9t, cha m\u1eb9 n\u00ean \u0111\u01b0a ra nh\u1eefng v\u00ed d\u1ee5 ch\u1eb7t ch\u1ebd trong cu\u1ed9c s\u1ed1ng c\u1ee7a ch\u00fang. V\u00ed d\u1ee5, h\u00ecnh \u1ea3nh c\u1ee7a \u0111\u1ed3ng h\u1ed3 ch\u1ec9 v\u00e0i gi\u1edd nh\u01b0 1H, 2H, 3H20P &#8230;. ho\u1eb7c s\u1eed d\u1ee5ng \u0111\u1ed3 ch\u01a1i h\u00ecnh h\u1ecdc ho\u1eb7c h\u00ecnh \u1ea3nh li\u00ean quan \u0111\u1ebfn tam gi\u00e1c c\u0169ng s\u1ebd hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng g\u00f3c s\u1eafc n\u00e9t, gi\u00fap tr\u1ebb d\u1ec5 hi\u1ec3u thay v\u00ec ch\u1ec9 d\u1ea1y \u0111o g\u00f3c d\u01b0\u1edbi 90 \u0111\u1ed9.<\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Voi_em_be_cua_ban_thuc_hanh_thuong_xuyen_la_khong_the_thieu\"><\/span>V\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean l\u00e0 kh\u00f4ng th\u1ec3 thi\u1ebfu<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p dir=\"ltr\">Khi tr\u1ebb em n\u1eafm b\u1eaft l\u00fd thuy\u1ebft v\u1ec1 lo\u1ea1i g\u00f3c n\u00e0y, cha m\u1eb9 n\u00ean th\u1ef1c h\u00e0nh v\u00e0 th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean h\u01a1n. C\u1ee5 th\u1ec3, b\u1ea1n n\u00ean y\u00eau c\u1ea7u con b\u1ea1n th\u1ef1c hi\u1ec7n c\u00e1c b\u00e0i t\u1eadp \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong l\u1edbp, trong s\u00e1ch gi\u00e1o khoa, b\u00e0i t\u1eadp, t\u00ecm hi\u1ec3u th\u00eam ki\u1ebfn th\u1ee9c m\u1edbi tr\u00ean internet, t\u00ecm hi\u1ec3u c\u00e1c lo\u1ea1i ki\u1ebfn th\u1ee9c n\u00e2ng cao thay v\u00ec ch\u1ec9 d\u1eebng \u1edf c\u1ea5p \u0111\u1ed9 c\u01a1 b\u1ea3n, &#8230;<\/p>\n<p dir=\"ltr\">Tr\u1ebb em l\u00e0 th\u1ef1c h\u00e0nh th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 gi\u00fap con c\u00e1i hi\u1ec3u \u0111\u01b0\u1ee3c c\u1ed1t l\u00f5i c\u1ee7a ki\u1ebfn th\u1ee9c n\u00e0y, c\u0169ng nh\u01b0 k\u00edch th\u00edch suy ngh\u0129 v\u00e0 kh\u1ea3 n\u0103ng h\u1ecdc to\u00e1n thay v\u00ec ch\u1ec9 h\u1ecdc l\u00fd thuy\u1ebft.<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-7.jpg\" alt=\"\u0110i\u1ec1u r\u1ea5t quan tr\u1ecdng l\u00e0 ph\u1ea3i th\u1ef1c h\u00e0nh v\u1edbi em b\u00e9 c\u1ee7a b\u1ea1n. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Mot_so_bai_tap_ve_goc_toan_lop_4_de_tre_thuc_hanh\"><\/span>M\u1ed9t s\u1ed1 b\u00e0i t\u1eadp v\u1ec1 g\u00f3c to\u00e1n l\u1edbp 4 \u0111\u1ec3 tr\u1ebb th\u1ef1c h\u00e0nh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 c\u1ee7a to\u00e1n h\u1ecdc li\u00ean quan \u0111\u1ebfn g\u00f3c s\u1eafc n\u00e9t, \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 b\u00e0i t\u1eadp cho tr\u1ebb th\u1ef1c h\u00e0nh c\u00f9ng nhau:<\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/goc-nhon-8.jpg\" alt=\"(Ngu\u1ed3n: T\u00f3m t\u1eaft)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<\/p>\n<p dir=\"ltr\">Tr\u00ean \u0111\u00e2y l\u00e0 ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 c\u00e1c g\u00f3c s\u1eafc n\u00e9t. M\u1eb7c d\u00f9 l\u00fd thuy\u1ebft n\u00e0y kh\u00e1 \u0111\u01a1n gi\u1ea3n, khi tham gia th\u1ef1c h\u00e0nh, vi\u1ec7c gi\u1ea3i quy\u1ebft c\u00e1c b\u00e0i t\u1eadp \u0111\u00f2i h\u1ecfi tr\u1ebb ph\u1ea3i h\u1ecdc c\u1ea9n th\u1eadn, l\u00e0m vi\u1ec7c ch\u0103m ch\u1ec9, c\u0169ng nh\u01b0 \u00e1p d\u1ee5ng c\u00e1c b\u00ed m\u1eadt m\u00e0 kh\u1ec9 chia s\u1ebb \u1edf tr\u00ean \u0111\u1ec3 gi\u00fap vi\u1ec7c h\u1ecdc c\u1ee7a ch\u00fang \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t.<\/p>\n<p>                                    Ngu\u1ed3n tham chi\u1ebfu<\/p>\n<p>C\u1ea5p t\u00ednh, \u0111\u00fang, v\u00e0 c\u00e1c g\u00f3c \u0111\u1ed9 kh\u00f3<\/p>\n<p>https:\/\/www.khanacademy.org\/math\/cc-fourth-grad-math\/plane-gigures\/imp-angle-protroduction\/v\/acute-right-and-btuse-angles#stext=acute%20angles%20measure<\/p>\n<p>G\u00f3c c\u1ea5p t\u00ednh &#8211; \u0110\u1ecbnh ngh\u0129a v\u1edbi c\u00e1c v\u00ed d\u1ee5<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"FSIFyeX9Rj\"><p><a href=\"https:\/\/www.splashlearn.com\/math-vocabulary\/geometry\/degree-angle-measure\/acute-angle\/#main\" target=\"_blank\" rel=\"noopener\">Acute angle<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;Acute angle&#8221; &#8212; SplashLearn\" src=\"https:\/\/www.splashlearn.com\/math-vocabulary\/geometry\/degree-angle-measure\/acute-angle\/#main\/embed\/#?secret=A3tjawhewu#?secret=FSIFyeX9Rj\" data-secret=\"FSIFyeX9Rj\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>G\u00f3c nh\u1ecdn l\u00e0 m\u1ed9t trong nh\u1eefng th\u1ec3 lo\u1ea1i g\u00f3c c\u1ee7a h\u00ecnh h\u1ecdc. Ki\u1ebfn th\u1ee9c n\u00e0y h\u1ecd s\u1ebd h\u1ecdc trong ch\u01b0\u01a1ng tr\u00ecnh to\u00e1n l\u1edbp 4, c\u00f9ng v\u1edbi nhi\u1ec1u th\u1ec3 lo\u1ea1i g\u00f3c kh\u00e1c. V\u00ec v\u1eady, \u0111\u1ec3 hi\u1ec3u r\u00f5 h\u01a1n v\u1ec1 g\u00f3c s\u1eafc n\u00e9t l\u00e0 g\u00ec? \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a lo\u1ea1i g\u00f3c n\u00e0y, h\u00e3y \u0111\u1ec3 kh\u1ec9 kh\u00e1m ph\u00e1 r\u00f5&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-27470","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/27470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=27470"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/27470\/revisions"}],"predecessor-version":[{"id":28739,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/27470\/revisions\/28739"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=27470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=27470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=27470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}