{"id":34192,"date":"2026-10-26T16:56:06","date_gmt":"2026-10-26T09:56:06","guid":{"rendered":"https:\/\/etest.edu.vn\/?p=34192"},"modified":"2026-10-26T16:56:06","modified_gmt":"2026-10-26T09:56:06","slug":"inscribed-angle-la-gi-cong-thuc-tinh-chat-va-bai-tap-sat-math","status":"publish","type":"post","link":"https:\/\/etest.edu.vn\/en\/inscribed-angle-la-gi-cong-thuc-tinh-chat-va-bai-tap-sat-math\/","title":{"rendered":"Inscribed Angle l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c, t\u00ednh ch\u1ea5t v\u00e0 b\u00e0i t\u1eadp SAT Math"},"content":{"rendered":"<p><b>Inscribed Angle (g\u00f3c n\u1ed9i ti\u1ebfp)<\/b><span style=\"font-weight: 400;\"> l\u00e0 m\u1ed9t ki\u1ebfn th\u1ee9c h\u00ecnh h\u1ecdc quan tr\u1ecdng li\u00ean quan \u0111\u1ebfn \u0111\u01b0\u1eddng tr\u00f2n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u00e0i to\u00e1n v\u1ec1 g\u00f3c, cung tr\u00f2n v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c y\u1ebfu t\u1ed1 h\u00ecnh h\u1ecdc. Trong qu\u00e1 tr\u00ecnh \u00f4n luy\u1ec7n Digital SAT Math, hi\u1ec3u r\u00f5 \u0111\u1ecbnh ngh\u0129a, t\u00ednh ch\u1ea5t v\u00e0 c\u00e1ch \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c g\u00f3c n\u1ed9i ti\u1ebfp s\u1ebd gi\u00fap h\u1ecdc sinh gi\u1ea3i quy\u1ebft b\u00e0i to\u00e1n ch\u00ednh x\u00e1c v\u00e0 h\u1ea1n ch\u1ebf nh\u1eefng l\u1ed7i sai khi suy lu\u1eadn.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">B\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y c\u1ee7a ETEST s\u1ebd gi\u00fap b\u1ea1n n\u1eafm v\u1eefng Inscribed Angle l\u00e0 g\u00ec, c\u00e1ch t\u00ednh s\u1ed1 \u0111o g\u00f3c n\u1ed9i ti\u1ebfp, c\u00e1c d\u1ea1ng b\u00e0i minh h\u1ecda v\u00e0 ph\u01b0\u01a1ng ph\u00e1p v\u1eadn d\u1ee5ng ki\u1ebfn th\u1ee9c n\u00e0y trong SAT Math.<\/span><\/p>\n<figure id=\"attachment_34193\" aria-describedby=\"caption-attachment-34193\" style=\"width: 533px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-34193 size-medium\" src=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-1-5-533x400.jpg\" alt=\"\" width=\"533\" height=\"400\" srcset=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-1-5-533x400.jpg 533w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-1-5-768x576.jpg 768w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-1-5-16x12.jpg 16w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-1-5.jpg 1024w\" sizes=\"(max-width: 533px) 100vw, 533px\" \/><figcaption id=\"caption-attachment-34193\" class=\"wp-caption-text\">Inscribed Angle l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h2><b>Inscribed angle l\u00e0 g\u00ec?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">M\u1ed9t g\u00f3c \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 <\/span><b>inscribed angle<\/b><span style=\"font-weight: 400;\"> khi th\u1ecfa m\u00e3n hai \u0111i\u1ec1u ki\u1ec7n:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u1ec9nh n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Hai c\u1ea1nh l\u00e0 hai d\u00e2y cung<\/b><span style=\"font-weight: 400;\"> (chord) c\u1eaft \u0111\u01b0\u1eddng tr\u00f2n.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Ph\u1ea7n cung n\u1eb1m b\u00ean trong g\u00f3c, gi\u1eefa hai \u0111i\u1ec3m m\u00e0 c\u00e1c c\u1ea1nh c\u1eaft \u0111\u01b0\u1eddng tr\u00f2n, g\u1ecdi l\u00e0 <\/span><b>cung b\u1ecb ch\u1eafn<\/b><span style=\"font-weight: 400;\"> (intercepted arc). S\u1ed1 \u0111o c\u1ee7a g\u00f3c n\u1ed9i ti\u1ebfp ph\u1ee5 thu\u1ed9c ho\u00e0n to\u00e0n v\u00e0o cung n\u00e0y.<\/span><\/p>\n<h3><b>Ph\u00e2n bi\u1ec7t v\u1edbi g\u00f3c \u1edf t\u00e2m (central angle)<\/b><\/h3>\n<table>\n<tbody>\n<tr>\n<td><b>Lo\u1ea1i g\u00f3c<\/b><\/td>\n<td><b>\u0110\u1ec9nh n\u1eb1m \u1edf \u0111\u00e2u?<\/b><\/td>\n<td><b>Quan h\u1ec7 v\u1edbi cung b\u1ecb ch\u1eafn<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Central angle<\/b><span style=\"font-weight: 400;\"> (g\u00f3c \u1edf t\u00e2m)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">T\u00e2m \u0111\u01b0\u1eddng tr\u00f2n<\/span><\/td>\n<td><span style=\"font-weight: 400;\">B\u1eb1ng s\u1ed1 \u0111o cung b\u1ecb ch\u1eafn<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Inscribed angle<\/b><span style=\"font-weight: 400;\"> (g\u00f3c n\u1ed9i ti\u1ebfp)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n<\/span><\/td>\n<td><span style=\"font-weight: 400;\">B\u1eb1ng <\/span><b>m\u1ed9t n\u1eeda<\/b><span style=\"font-weight: 400;\"> s\u1ed1 \u0111o cung b\u1ecb ch\u1eafn<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">N\u00f3i c\u00e1ch kh\u00e1c, v\u1edbi c\u00f9ng m\u1ed9t cung, g\u00f3c n\u1ed9i ti\u1ebfp lu\u00f4n b\u1eb1ng m\u1ed9t n\u1eeda g\u00f3c \u1edf t\u00e2m.<\/span><\/p>\n<h2><b>\u0110\u1ecbnh l\u00fd g\u00f3c n\u1ed9i ti\u1ebfp (Inscribed Angle Theorem)<\/b><\/h2>\n<p><b>S\u1ed1 \u0111o g\u00f3c n\u1ed9i ti\u1ebfp = \u00bd \u00d7 s\u1ed1 \u0111o cung b\u1ecb ch\u1eafn.<\/b><\/p>\n<p><span style=\"font-weight: 400;\">Vi\u1ebft b\u1eb1ng c\u00f4ng th\u1ee9c: n\u1ebfu cung b\u1ecb ch\u1eafn c\u00f3 s\u1ed1 \u0111o x\u00b0 th\u00ec g\u00f3c n\u1ed9i ti\u1ebfp c\u00f3 s\u1ed1 \u0111o <\/span><b>x\u00b0 \u00f7 2<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">V\u00ed d\u1ee5 nhanh:<\/span><\/i><span style=\"font-weight: 400;\"> Cung b\u1ecb ch\u1eafn 100\u00b0 th\u00ec g\u00f3c n\u1ed9i ti\u1ebfp l\u00e0 50\u00b0. Ng\u01b0\u1ee3c l\u1ea1i, g\u00f3c n\u1ed9i ti\u1ebfp 40\u00b0 th\u00ec cung b\u1ecb ch\u1eafn l\u00e0 80\u00b0.<\/span><\/p>\n<h2><b>C\u00e1c h\u1ec7 qu\u1ea3 quan tr\u1ecdng c\u1ee7a g\u00f3c n\u1ed9i ti\u1ebfp<\/b><\/h2>\n<ol>\n<li><span style=\"font-weight: 400;\"> C\u00e1c g\u00f3c n\u1ed9i ti\u1ebfp c\u00f9ng ch\u1eafn m\u1ed9t cung th\u00ec b\u1eb1ng nhau. D\u00f9 \u0111\u1ec9nh c\u1ee7a c\u00e1c g\u00f3c n\u1eb1m \u1edf nh\u1eefng v\u1ecb tr\u00ed kh\u00e1c nhau tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n, n\u1ebfu ch\u00fang c\u00f9ng ch\u1eafn m\u1ed9t cung th\u00ec s\u1ed1 \u0111o c\u00e1c g\u00f3c v\u1eabn b\u1eb1ng nhau.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> G\u00f3c n\u1ed9i ti\u1ebfp ch\u1eafn n\u1eeda \u0111\u01b0\u1eddng tr\u00f2n lu\u00f4n b\u1eb1ng <\/span><span style=\"font-weight: 400;\">9<\/span><span style=\"font-weight: 400;\">0<\/span><span style=\"font-weight: 400;\">. Khi m\u1ed9t g\u00f3c n\u1ed9i ti\u1ebfp ch\u1eafn \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n, g\u00f3c \u0111\u00f3 l\u00e0 g\u00f3c vu\u00f4ng. T\u00ednh ch\u1ea5t n\u00e0y th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 nh\u1eadn bi\u1ebft tam gi\u00e1c vu\u00f4ng c\u00f3 ba \u0111\u1ec9nh n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> T\u1ee9 gi\u00e1c n\u1ed9i ti\u1ebfp c\u00f3 hai g\u00f3c \u0111\u1ed1i b\u00f9 nhau. M\u1ed9t t\u1ee9 gi\u00e1c \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 t\u1ee9 gi\u00e1c n\u1ed9i ti\u1ebfp khi c\u1ea3 b\u1ed1n \u0111\u1ec9nh c\u00f9ng n\u1eb1m tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng tr\u00f2n. Khi \u0111\u00f3, t\u1ed5ng s\u1ed1 \u0111o hai g\u00f3c \u0111\u1ed1i di\u1ec7n lu\u00f4n b\u1eb1ng <\/span><span style=\"font-weight: 400;\">18<\/span><span style=\"font-weight: 400;\">0<\/span><span style=\"font-weight: 400;\">. T\u00ednh ch\u1ea5t n\u00e0y gi\u00fap t\u00ecm g\u00f3c ch\u01b0a bi\u1ebft v\u00e0 gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc li\u00ean quan \u0111\u1ebfn \u0111\u01b0\u1eddng tr\u00f2n.<\/span><\/li>\n<li><span style=\"font-weight: 400;\"> Ba g\u00f3c c\u1ee7a tam gi\u00e1c n\u1ed9i ti\u1ebfp li\u00ean h\u1ec7 v\u1edbi ba cung b\u1ecb ch\u1eafn t\u01b0\u01a1ng \u1ee9ng. M\u1ed7i g\u00f3c c\u1ee7a tam gi\u00e1c n\u1ed9i ti\u1ebfp b\u1eb1ng m\u1ed9t n\u1eeda s\u1ed1 \u0111o cung m\u00e0 g\u00f3c \u0111\u00f3 ch\u1eafn. Ba cung t\u01b0\u01a1ng \u1ee9ng v\u1edbi ba c\u1ea1nh c\u1ee7a tam gi\u00e1c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng <\/span><span style=\"font-weight: 400;\">36<\/span><span style=\"font-weight: 400;\">0<\/span><span style=\"font-weight: 400;\">, t\u1eeb \u0111\u00f3 gi\u00fap x\u00e1c \u0111\u1ecbnh m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c g\u00f3c v\u00e0 cung trong \u0111\u01b0\u1eddng tr\u00f2n.<\/span><\/li>\n<\/ol>\n<h2><b>C\u00e1ch gi\u1ea3i b\u00e0i t\u1eadp v\u1ec1 g\u00f3c n\u1ed9i ti\u1ebfp trong 3 b\u01b0\u1edbc<\/b><\/h2>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>X\u00e1c \u0111\u1ecbnh cung b\u1ecb ch\u1eafn.<\/b><span style=\"font-weight: 400;\"> T\u00ecm hai \u0111i\u1ec3m m\u00e0 c\u00e1c c\u1ea1nh c\u1ee7a g\u00f3c c\u1eaft \u0111\u01b0\u1eddng tr\u00f2n, r\u1ed3i x\u00e1c \u0111\u1ecbnh cung n\u1eb1m b\u00ean trong g\u00f3c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u00c1p d\u1ee5ng \u0111\u1ecbnh l\u00fd.<\/b><span style=\"font-weight: 400;\"> G\u00f3c n\u1ed9i ti\u1ebfp b\u1eb1ng \u00bd cung, ho\u1eb7c cung b\u1eb1ng 2 l\u1ea7n g\u00f3c n\u1ed9i ti\u1ebfp.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ki\u1ec3m tra l\u1ea1i.<\/b><span style=\"font-weight: 400;\"> C\u00e1c cung c\u1ed9ng l\u1ea1i c\u00f3 b\u1eb1ng 360\u00b0 kh\u00f4ng? T\u1ed5ng ba g\u00f3c tam gi\u00e1c c\u00f3 b\u1eb1ng 180\u00b0 kh\u00f4ng?<\/span><\/li>\n<\/ol>\n<figure id=\"attachment_34194\" aria-describedby=\"caption-attachment-34194\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-34194 size-medium\" src=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-2-5-600x400.jpg\" alt=\"\" width=\"600\" height=\"400\" srcset=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-2-5-600x400.jpg 600w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-2-5-18x12.jpg 18w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-2-5.jpg 744w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><figcaption id=\"caption-attachment-34194\" class=\"wp-caption-text\">C\u00e1ch gi\u1ea3i b\u00e0i t\u1eadp v\u1ec1 g\u00f3c n\u1ed9i ti\u1ebfp trong 3 b\u01b0\u1edbc<\/figcaption><\/figure>\n<h2><b>B\u00e0i t\u1eadp v\u1eadn d\u1ee5ng c\u00f3 l\u1eddi gi\u1ea3i<\/b><\/h2>\n<h4><b>B\u00e0i 1 (c\u01a1 b\u1ea3n)<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">G\u00f3c n\u1ed9i ti\u1ebfp \u2220ABC ch\u1eafn cung AC c\u00f3 s\u1ed1 \u0111o 80\u00b0. T\u00ednh \u2220ABC.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Gi\u1ea3i:<\/span><\/i><span style=\"font-weight: 400;\"> \u2220ABC = 80\u00b0 \u00f7 2 = <\/span><b>40\u00b0<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h4><b>B\u00e0i 2 (c\u01a1 b\u1ea3n)<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">M\u1ed9t g\u00f3c n\u1ed9i ti\u1ebfp c\u00f3 s\u1ed1 \u0111o 35\u00b0. T\u00ednh s\u1ed1 \u0111o cung b\u1ecb ch\u1eafn.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Gi\u1ea3i:<\/span><\/i><span style=\"font-weight: 400;\"> Cung b\u1ecb ch\u1eafn = 2 \u00d7 35\u00b0 = <\/span><b>70\u00b0<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h4><b>B\u00e0i 3 (tam gi\u00e1c vu\u00f4ng n\u1ed9i ti\u1ebfp)<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">AB l\u00e0 \u0111\u01b0\u1eddng k\u00ednh c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n, C l\u00e0 \u0111i\u1ec3m tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n (C kh\u00e1c A, B). Bi\u1ebft \u2220CAB = 32\u00b0. T\u00ednh \u2220CBA.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Gi\u1ea3i:<\/span><\/i><span style=\"font-weight: 400;\"> V\u00ec AB l\u00e0 \u0111\u01b0\u1eddng k\u00ednh n\u00ean \u2220ACB = 90\u00b0. Trong tam gi\u00e1c ABC, \u2220CBA = 180\u00b0 \u2212 90\u00b0 \u2212 32\u00b0 = <\/span><b>58\u00b0<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h4><b>B\u00e0i 4 (t\u1ee9 gi\u00e1c n\u1ed9i ti\u1ebfp)<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">T\u1ee9 gi\u00e1c ABCD n\u1ed9i ti\u1ebfp \u0111\u01b0\u1eddng tr\u00f2n, c\u00f3 \u2220A = 78\u00b0 v\u00e0 \u2220B = 105\u00b0. T\u00ednh \u2220C v\u00e0 \u2220D.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Gi\u1ea3i:<\/span><\/i><span style=\"font-weight: 400;\"> \u2220A v\u00e0 \u2220C l\u00e0 hai g\u00f3c \u0111\u1ed1i n\u00ean \u2220C = 180\u00b0 \u2212 78\u00b0 = <\/span><b>102\u00b0<\/b><span style=\"font-weight: 400;\">. \u2220B v\u00e0 \u2220D l\u00e0 hai g\u00f3c \u0111\u1ed1i n\u00ean \u2220D = 180\u00b0 \u2212 105\u00b0 = <\/span><b>75\u00b0<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h4><b>B\u00e0i 5 (g\u00f3c \u1edf t\u00e2m v\u00e0 g\u00f3c n\u1ed9i ti\u1ebfp)<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">Cho O l\u00e0 t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n, \u2220AOB = 110\u00b0 (g\u00f3c \u1edf t\u00e2m). \u0110i\u1ec3m C n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n.<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\"> a) N\u1ebfu C n\u1eb1m tr\u00ean cung l\u1edbn AB, t\u00ednh \u2220ACB.<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\"> b) N\u1ebfu C n\u1eb1m tr\u00ean cung nh\u1ecf AB, t\u00ednh \u2220ACB.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Gi\u1ea3i:<\/span><\/i><i><span style=\"font-weight: 400;\"><br \/>\n<\/span><\/i><span style=\"font-weight: 400;\"> a) C n\u1eb1m tr\u00ean cung l\u1edbn n\u00ean g\u00f3c ACB ch\u1eafn cung nh\u1ecf AB (110\u00b0). \u2220ACB = 110\u00b0 \u00f7 2 = <\/span><b>55\u00b0<\/b><span style=\"font-weight: 400;\">.<\/span><span style=\"font-weight: 400;\"><br \/>\n<\/span><span style=\"font-weight: 400;\"> b) C n\u1eb1m tr\u00ean cung nh\u1ecf n\u00ean g\u00f3c ACB ch\u1eafn cung l\u1edbn AB, c\u00f3 s\u1ed1 \u0111o 360\u00b0 \u2212 110\u00b0 = 250\u00b0. \u2220ACB = 250\u00b0 \u00f7 2 = <\/span><b>125\u00b0<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h4><b>B\u00e0i 6 (tam gi\u00e1c n\u1ed9i ti\u1ebfp)<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">Tam gi\u00e1c ABC n\u1ed9i ti\u1ebfp \u0111\u01b0\u1eddng tr\u00f2n, c\u00f3 cung AB = 100\u00b0 v\u00e0 cung BC = 120\u00b0 (c\u00e1c cung kh\u00f4ng ch\u1ee9a \u0111\u1ec9nh c\u00f2n l\u1ea1i). T\u00ednh ba g\u00f3c c\u1ee7a tam gi\u00e1c.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Gi\u1ea3i:<\/span><\/i><span style=\"font-weight: 400;\"> Cung CA = 360\u00b0 \u2212 100\u00b0 \u2212 120\u00b0 = 140\u00b0. Do \u0111\u00f3 \u2220C = 100\u00b0 \u00f7 2 = <\/span><b>50\u00b0<\/b><span style=\"font-weight: 400;\">, \u2220A = 120\u00b0 \u00f7 2 = <\/span><b>60\u00b0<\/b><span style=\"font-weight: 400;\">, \u2220B = 140\u00b0 \u00f7 2 = <\/span><b>70\u00b0<\/b><span style=\"font-weight: 400;\">. Ki\u1ec3m tra: 50\u00b0 + 60\u00b0 + 70\u00b0 = 180\u00b0.<\/span><\/p>\n<h4><b>B\u00e0i 7 (d\u1ea1ng SAT, c\u00f3 bi\u1ebfn)<\/b><\/h4>\n<p><span style=\"font-weight: 400;\">M\u1ed9t g\u00f3c n\u1ed9i ti\u1ebfp c\u00f3 s\u1ed1 \u0111o (3x + 5)\u00b0 v\u00e0 ch\u1eafn cung c\u00f3 s\u1ed1 \u0111o (8x \u2212 10)\u00b0. T\u00ecm x v\u00e0 s\u1ed1 \u0111o g\u00f3c.<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Gi\u1ea3i:<\/span><\/i><span style=\"font-weight: 400;\"> G\u00f3c n\u1ed9i ti\u1ebfp b\u1eb1ng n\u1eeda cung n\u00ean 3x + 5 = (8x \u2212 10) \u00f7 2 = 4x \u2212 5. Suy ra x = <\/span><b>10<\/b><span style=\"font-weight: 400;\">. S\u1ed1 \u0111o g\u00f3c n\u1ed9i ti\u1ebfp l\u00e0 3 \u00d7 10 + 5 = <\/span><b>35\u00b0<\/b><span style=\"font-weight: 400;\">, cung b\u1ecb ch\u1eafn l\u00e0 8 \u00d7 10 \u2212 10 = 70\u00b0.<\/span><\/p>\n<h2><b>M\u1eb9o l\u00e0m b\u00e0i v\u00e0 nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi gi\u1ea3i b\u00e0i Inscribed Angle<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">M\u1eb9o l\u00e0m b\u00e0i nhanh:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nh\u1eadn di\u1ec7n \u0111\u01b0\u1eddng k\u00ednh: Khi th\u1ea5y m\u1ed9t c\u1ea1nh c\u1ee7a tam gi\u00e1c l\u00e0 \u0111\u01b0\u1eddng k\u00ednh \u0111\u01b0\u1eddng tr\u00f2n, h\u00e3y ki\u1ec3m tra ngay g\u00f3c n\u1ed9i ti\u1ebfp \u0111\u1ed1i di\u1ec7n v\u00ec g\u00f3c n\u00e0y lu\u00f4n b\u1eb1ng <\/span><span style=\"font-weight: 400;\">9<\/span><span style=\"font-weight: 400;\">0<\/span><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nh\u1eadn di\u1ec7n t\u1ee9 gi\u00e1c n\u1ed9i ti\u1ebfp: N\u1ebfu c\u1ea3 b\u1ed1n \u0111\u1ec9nh c\u1ee7a t\u1ee9 gi\u00e1c c\u00f9ng n\u1eb1m tr\u00ean m\u1ed9t \u0111\u01b0\u1eddng tr\u00f2n, h\u00e3y \u00e1p d\u1ee5ng t\u00ednh ch\u1ea5t hai g\u00f3c \u0111\u1ed1i c\u00f3 t\u1ed5ng b\u1eb1ng <\/span><span style=\"font-weight: 400;\">18<\/span><span style=\"font-weight: 400;\">0<\/span><span style=\"font-weight: 400;\"> \u0111\u1ec3 t\u00ecm g\u00f3c ch\u01b0a bi\u1ebft.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">V\u1eadn d\u1ee5ng m\u1ed1i quan h\u1ec7 gi\u1eefa g\u00f3c \u1edf t\u00e2m v\u00e0 g\u00f3c n\u1ed9i ti\u1ebfp: Khi hai g\u00f3c c\u00f9ng ch\u1eafn m\u1ed9t cung, g\u00f3c n\u1ed9i ti\u1ebfp b\u1eb1ng m\u1ed9t n\u1eeda g\u00f3c \u1edf t\u00e2m. \u0110\u00e2y l\u00e0 c\u00e1ch t\u00ednh nhanh th\u01b0\u1eddng g\u1eb7p trong c\u00e1c b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc \u0111\u01b0\u1eddng tr\u00f2n.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Nh\u1eefng l\u1ed7i c\u1ea7n tr\u00e1nh:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Qu\u00ean chia \u0111\u00f4i s\u1ed1 \u0111o cung: G\u00f3c n\u1ed9i ti\u1ebfp b\u1eb1ng m\u1ed9t n\u1eeda s\u1ed1 \u0111o cung b\u1ecb ch\u1eafn, kh\u00f4ng b\u1eb1ng to\u00e0n b\u1ed9 s\u1ed1 \u0111o cung.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Nh\u1ea7m l\u1eabn gi\u1eefa g\u00f3c \u1edf t\u00e2m v\u00e0 g\u00f3c n\u1ed9i ti\u1ebfp: G\u00f3c \u1edf t\u00e2m c\u00f3 \u0111\u1ec9nh t\u1ea1i t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n, c\u00f2n g\u00f3c n\u1ed9i ti\u1ebfp c\u00f3 \u0111\u1ec9nh n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n. Hai g\u00f3c n\u00e0y c\u00f3 m\u1ed1i quan h\u1ec7 v\u1ec1 s\u1ed1 \u0111o nh\u01b0ng kh\u00f4ng th\u1ec3 \u00e1p d\u1ee5ng c\u00f9ng m\u1ed9t c\u00f4ng th\u1ee9c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X\u00e1c \u0111\u1ecbnh sai cung b\u1ecb ch\u1eafn: C\u1ea7n x\u00e1c \u0111\u1ecbnh ch\u00ednh x\u00e1c cung n\u1eb1m gi\u1eefa hai giao \u0111i\u1ec3m c\u1ee7a c\u00e1c c\u1ea1nh g\u00f3c v\u1edbi \u0111\u01b0\u1eddng tr\u00f2n v\u00e0 kh\u00f4ng ch\u1ee9a \u0111\u1ec9nh c\u1ee7a g\u00f3c n\u1ed9i ti\u1ebfp. Nh\u1ea7m l\u1eabn gi\u1eefa cung nh\u1ecf v\u00e0 cung l\u1edbn c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn k\u1ebft qu\u1ea3 sai.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Qu\u00ean t\u1ed5ng s\u1ed1 \u0111o c\u00e1c cung c\u1ee7a \u0111\u01b0\u1eddng tr\u00f2n: T\u1ed5ng s\u1ed1 \u0111o c\u00e1c cung t\u1ea1o th\u00e0nh m\u1ed9t v\u00f2ng tr\u00f2n l\u00e0 <\/span><span style=\"font-weight: 400;\">36<\/span><span style=\"font-weight: 400;\">0<\/span><span style=\"font-weight: 400;\">. Ghi nh\u1edb t\u00ednh ch\u1ea5t n\u00e0y gi\u00fap ki\u1ec3m tra k\u1ebft qu\u1ea3 v\u00e0 gi\u1ea3i c\u00e1c b\u00e0i to\u00e1n li\u00ean quan \u0111\u1ebfn nhi\u1ec1u cung tr\u00f2n.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">L\u01b0u \u00fd: Khi gi\u1ea3i b\u00e0i Inscribed Angle trong SAT Math, h\u00e3y x\u00e1c \u0111\u1ecbnh \u0111\u00fang \u0111\u1ec9nh g\u00f3c, hai c\u1ea1nh c\u1ee7a g\u00f3c v\u00e0 cung b\u1ecb ch\u1eafn tr\u01b0\u1edbc khi \u00e1p d\u1ee5ng c\u00f4ng th\u1ee9c. Th\u00f3i quen n\u00e0y gi\u00fap h\u1ea1n ch\u1ebf sai s\u00f3t v\u00e0 n\u00e2ng cao t\u1ed1c \u0111\u1ed9 l\u00e0m b\u00e0i.<\/span><\/p>\n<figure id=\"attachment_34195\" aria-describedby=\"caption-attachment-34195\" style=\"width: 429px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-34195 size-medium\" src=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-9-429x400.jpg\" alt=\"\" width=\"429\" height=\"400\" srcset=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-9-429x400.jpg 429w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-9-13x12.jpg 13w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/Untitled-Design-9.jpg 597w\" sizes=\"(max-width: 429px) 100vw, 429px\" \/><figcaption id=\"caption-attachment-34195\" class=\"wp-caption-text\">M\u1eb9o l\u00e0m b\u00e0i v\u00e0 nh\u1eefng l\u1ed7i th\u01b0\u1eddng g\u1eb7p khi gi\u1ea3i b\u00e0i Inscribed Angle<\/figcaption><\/figure>\n<h2><b>H\u1ecdc h\u00ecnh h\u1ecdc SAT Math hi\u1ec7u qu\u1ea3 c\u00f9ng ETEST<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 chinh ph\u1ee5c c\u00e1c b\u00e0i to\u00e1n h\u00ecnh h\u1ecdc trong<\/span><a href=\"https:\/\/etest.edu.vn\/en\/digital-sat\/\"><span style=\"font-weight: 400;\"> Digital SAT<\/span><\/a><span style=\"font-weight: 400;\"> Math, h\u1ecdc sinh c\u1ea7n n\u1eafm v\u1eefng c\u00e1c \u0111\u1ecbnh l\u00fd c\u1ed1t l\u00f5i, r\u00e8n luy\u1ec7n kh\u1ea3 n\u0103ng nh\u1eadn di\u1ec7n d\u1ea1ng b\u00e0i v\u00e0 n\u00e2ng cao t\u1ed1c \u0111\u1ed9 gi\u1ea3i to\u00e1n th\u00f4ng qua qu\u00e1 tr\u00ecnh luy\u1ec7n t\u1eadp c\u00f3 h\u1ec7 th\u1ed1ng. T\u1ea1i<\/span><a href=\"https:\/\/etest.edu.vn\/en\/\"><span style=\"font-weight: 400;\"> ETEST<\/span><\/a><span style=\"font-weight: 400;\">, l\u1ed9 tr\u00ecnh \u00f4n luy\u1ec7n \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng d\u1ef1a tr\u00ean<\/span><a href=\"https:\/\/sat.etest.edu.vn\/\"><span style=\"font-weight: 400;\"> tr\u00ecnh \u0111\u1ed9 \u0111\u1ea7u v\u00e0o <\/span><\/a><span style=\"font-weight: 400;\">v\u00e0 m\u1ee5c ti\u00eau \u0111i\u1ec3m s\u1ed1 c\u1ee7a t\u1eebng h\u1ecdc sinh, b\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u00e1nh gi\u00e1 n\u0103ng l\u1ef1c, c\u1ee7ng c\u1ed1 ki\u1ebfn th\u1ee9c h\u00ecnh h\u1ecdc v\u00e0 thu\u1eadt ng\u1eef to\u00e1n h\u1ecdc ti\u1ebfng Anh, sau \u0111\u00f3 luy\u1ec7n t\u1eadp theo t\u1eebng chuy\u00ean \u0111\u1ec1 v\u00e0 th\u1ef1c h\u00e0nh \u0111\u1ec1 thi m\u00f4 ph\u1ecfng c\u00f3 gi\u1edbi h\u1ea1n th\u1eddi gian. Vi\u1ec7c ph\u00e2n t\u00edch l\u1ed7i sai sau m\u1ed7i b\u00e0i ki\u1ec3m tra c\u0169ng gi\u00fap h\u1ecdc sinh x\u00e1c \u0111\u1ecbnh nh\u1eefng \u0111i\u1ec3m c\u1ea7n c\u1ea3i thi\u1ec7n, t\u1ed1i \u01b0u chi\u1ebfn l\u01b0\u1ee3c l\u00e0m b\u00e0i v\u00e0 t\u1eebng b\u01b0\u1edbc ti\u1ebfn g\u1ea7n h\u01a1n \u0111\u1ebfn m\u1ee5c ti\u00eau <\/span><a href=\"https:\/\/etest.edu.vn\/en\/khoa-hoc\/luyen-thi-sat\/\"><span style=\"font-weight: 400;\">SAT <\/span><\/a><span style=\"font-weight: 400;\">\u0111\u00e3 \u0111\u1ec1 ra.<\/span><\/p>\n<figure id=\"attachment_34196\" aria-describedby=\"caption-attachment-34196\" style=\"width: 711px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"wp-image-34196 size-medium\" src=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/CHEN-LOGO-CHO-ANH-3-20-711x400.jpg\" alt=\"\" width=\"711\" height=\"400\" srcset=\"https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/CHEN-LOGO-CHO-ANH-3-20-711x400.jpg 711w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/CHEN-LOGO-CHO-ANH-3-20-1400x788.jpg 1400w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/CHEN-LOGO-CHO-ANH-3-20-768x432.jpg 768w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/CHEN-LOGO-CHO-ANH-3-20-1536x864.jpg 1536w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/CHEN-LOGO-CHO-ANH-3-20-18x10.jpg 18w, https:\/\/etest.edu.vn\/wp-content\/uploads\/2026\/10\/CHEN-LOGO-CHO-ANH-3-20.jpg 1920w\" sizes=\"(max-width: 711px) 100vw, 711px\" \/><figcaption id=\"caption-attachment-34196\" class=\"wp-caption-text\">H\u1ecdc h\u00ecnh h\u1ecdc SAT Math hi\u1ec7u qu\u1ea3 c\u00f9ng ETEST<\/figcaption><\/figure>\n<h3><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 inscribed angle:<\/b><\/h3>\n<ol>\n<li><b> Inscribed angle l\u00e0 g\u00ec?<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\"> \u0110\u00f3 l\u00e0 g\u00f3c c\u00f3 \u0111\u1ec9nh n\u1eb1m tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n v\u00e0 hai c\u1ea1nh l\u00e0 hai d\u00e2y cung. S\u1ed1 \u0111o c\u1ee7a n\u00f3 b\u1eb1ng m\u1ed9t n\u1eeda s\u1ed1 \u0111o cung b\u1ecb ch\u1eafn.<\/span><\/li>\n<li><b> G\u00f3c n\u1ed9i ti\u1ebfp kh\u00e1c g\u00f3c \u1edf t\u00e2m th\u1ebf n\u00e0o?<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\"> G\u00f3c \u1edf t\u00e2m c\u00f3 \u0111\u1ec9nh t\u1ea1i t\u00e2m \u0111\u01b0\u1eddng tr\u00f2n v\u00e0 b\u1eb1ng s\u1ed1 \u0111o cung b\u1ecb ch\u1eafn. G\u00f3c n\u1ed9i ti\u1ebfp c\u00f3 \u0111\u1ec9nh tr\u00ean \u0111\u01b0\u1eddng tr\u00f2n v\u00e0 ch\u1ec9 b\u1eb1ng m\u1ed9t n\u1eeda s\u1ed1 \u0111o cung \u0111\u00f3.<\/span><\/li>\n<li><b> G\u00f3c n\u1ed9i ti\u1ebfp ch\u1eafn n\u1eeda \u0111\u01b0\u1eddng tr\u00f2n b\u1eb1ng bao nhi\u00eau \u0111\u1ed9?<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\"> B\u1eb1ng 90\u00b0, v\u00ec n\u1eeda \u0111\u01b0\u1eddng tr\u00f2n l\u00e0 cung 180\u00b0.<\/span><\/li>\n<li><b> Inscribed angle c\u00f3 xu\u1ea5t hi\u1ec7n trong SAT Math kh\u00f4ng?<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\"> C\u00f3. Ki\u1ebfn th\u1ee9c v\u1ec1 \u0111\u01b0\u1eddng tr\u00f2n thu\u1ed9c nh\u00f3m h\u00ecnh h\u1ecdc c\u1ee7a Digital SAT, th\u01b0\u1eddng k\u1ebft h\u1ee3p v\u1edbi tam gi\u00e1c, \u0111\u1ea1i s\u1ed1 ho\u1eb7c t\u1ee9 gi\u00e1c n\u1ed9i ti\u1ebfp. ETEST l\u1ed3ng c\u00e1c ki\u1ebfn th\u1ee9c n\u1ec1n n\u00e0y v\u00e0o l\u1ed9 tr\u00ecnh h\u1ecdc \u0111\u1ec3 h\u1ecdc vi\u00ean kh\u00f4ng m\u1ea5t \u0111i\u1ec3m \u1edf nh\u1eefng c\u00e2u t\u01b0\u1edfng d\u1ec5.<\/span><\/li>\n<li><b> L\u00e0m sao nh\u1edb nhanh \u0111\u1ecbnh l\u00fd g\u00f3c n\u1ed9i ti\u1ebfp?<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\"> H\u00e3y nh\u1edb \u201cg\u00f3c n\u1ed9i ti\u1ebfp b\u1eb1ng n\u1eeda cung\u201d. Khi g\u1eb7p b\u00e0i kh\u00f3, v\u1ebd th\u00eam g\u00f3c \u1edf t\u00e2m c\u00f9ng ch\u1eafn cung \u0111\u00f3 \u0111\u1ec3 th\u1ea5y m\u1ed1i quan h\u1ec7 g\u1ea5p \u0111\u00f4i.<\/span><\/li>\n<\/ol>\n\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-bottom\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;34192&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;bottom&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;745&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;5&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0110\u00e1nh gi\u00e1 b\u00e0i vi\u1ebft&quot;,&quot;legend&quot;:&quot;5\\\/5 - (745 votes)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;Inscribed Angle l\u00e0 g\u00ec? C\u00f4ng th\u1ee9c, t\u00ednh ch\u1ea5t v\u00e0 b\u00e0i t\u1eadp SAT Math&quot;,&quot;width&quot;:&quot;142.5&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 142.5px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            5\/5 - (745 votes)    <\/div>\n    <\/div>","protected":false},"excerpt":{"rendered":"<p>Inscribed Angle (g\u00f3c n\u1ed9i ti\u1ebfp) l\u00e0 m\u1ed9t ki\u1ebfn th\u1ee9c h\u00ecnh h\u1ecdc quan tr\u1ecdng li\u00ean quan \u0111\u1ebfn \u0111\u01b0\u1eddng tr\u00f2n, th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c b\u00e0i to\u00e1n v\u1ec1 g\u00f3c, cung tr\u00f2n v\u00e0 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c y\u1ebfu t\u1ed1 h\u00ecnh h\u1ecdc. Trong qu\u00e1 tr\u00ecnh \u00f4n luy\u1ec7n Digital SAT Math, hi\u1ec3u r\u00f5 \u0111\u1ecbnh ngh\u0129a, t\u00ednh ch\u1ea5t v\u00e0 [&#8230;]","protected":false},"author":24,"featured_media":34195,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1,285],"tags":[],"class_list":["post-34192","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc","category-sat"],"acf":[],"_links":{"self":[{"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/posts\/34192","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/users\/24"}],"replies":[{"embeddable":true,"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/comments?post=34192"}],"version-history":[{"count":1,"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/posts\/34192\/revisions"}],"predecessor-version":[{"id":34197,"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/posts\/34192\/revisions\/34197"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/media\/34195"}],"wp:attachment":[{"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/media?parent=34192"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/categories?post=34192"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/etest.edu.vn\/en\/wp-json\/wp\/v2\/tags?post=34192"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}