\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015\" \/>\n<meta property=\"og:description\" content=\"\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 tr\u01b0\u1eddng THPT B\u1eafc S\u01a1n 2015 c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em theo d\u00f5i b\u00ean d\u01b0\u1edbi: \u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015 \u00a0 B\u00e0i 5 ( 3 \u0111i\u1ec3m): Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - 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C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam","article_published_time":"2016-11-22T07:07:37+00:00","og_image":[{"url":"http:\/\/img.toanhoc247.com\/picture\/2016\/0405\/de-thi-hk2-toan-11-2015-thpt-bac-son.png"}],"author":"Thu H\u01b0\u01a1ng","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Thu H\u01b0\u01a1ng","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/","url":"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/","name":"\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015","isPartOf":{"@id":"https:\/\/lop12.edu.vn\/#website"},"datePublished":"2016-11-22T07:07:37+00:00","dateModified":"2016-11-22T07:07:37+00:00","author":{"@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/a37935c3c859cc908088334047878c87"},"breadcrumb":{"@id":"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lop12.edu.vn\/"},{"@type":"ListItem","position":2,"name":"\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015"}]},{"@type":"WebSite","@id":"https:\/\/lop12.edu.vn\/#website","url":"https:\/\/lop12.edu.vn\/","name":"Lop12.edu.vn - 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{"id":6699,"date":"2016-11-22T07:07:37","date_gmt":"2016-11-22T07:07:37","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=6699"},"modified":"2016-11-22T07:07:37","modified_gmt":"2016-11-22T07:07:37","slug":"de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/","title":{"rendered":"\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015"},"content":{"rendered":"

\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 tr\u01b0\u1eddng THPT B\u1eafc S\u01a1n 2015 c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em theo d\u00f5i b\u00ean d\u01b0\u1edbi:<\/p>\n

\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015 \u00a0<\/strong><\/h4>\n
B\u00e0i 5 ( 3 \u0111i\u1ec3m)<\/em><\/strong>:<\/em><\/p>\n
Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a<\/em>, SA = a<\/em>, SA vu\u00f4ng g\u00f3c v\u1edbi mp(ABCD). G\u1ecdi I, K l\u1ea7n l\u01b0\u1ee3t l\u00e0 h\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a A l\u00ean SB, SD.<\/p>\n
a) Ch\u1ee9ng minh c\u00e1c m\u1eb7t b\u00ean c\u1ee7a h\u00ecnh ch\u00f3p S.ABCD l\u00e0 c\u00e1c tam gi\u00e1c vu\u00f4ng.<\/p>\n
b) Ch\u1ee9ng minh: mp(SAC) vu\u00f4ng g\u00f3c v\u1edbi mp(AIK).<\/p>\n
c) T\u00ednh g\u00f3c gi\u1eefa SC v\u00e0 mp(SAB).<\/p>\n
d) T\u00ednh kho\u1ea3ng c\u00e1ch t\u1eeb A \u0111\u1ebfn mp(SBD).<\/p>\n
$\"\"$ <\/p>\n
\u0110\u00e1p \u00e1n \u0111\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015 \u00a0<\/strong><\/h4>\n
$\"\"$ <\/p>\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 tr\u01b0\u1eddng THPT B\u1eafc S\u01a1n 2015 c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em theo d\u00f5i b\u00ean d\u01b0\u1edbi: \u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015 \u00a0 B\u00e0i 5 ( 3 \u0111i\u1ec3m): Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[171],"tags":[],"yoast_head":"\n\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015\" \/>\n<meta property=\"og:description\" content=\"\u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 tr\u01b0\u1eddng THPT B\u1eafc S\u01a1n 2015 c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em theo d\u00f5i b\u00ean d\u01b0\u1edbi: \u0110\u1ec1 thi h\u1ecdc k\u00ec 2 m\u00f4n To\u00e1n 11 \u2013 THPT B\u1eafc S\u01a1n 2015 \u00a0 B\u00e0i 5 ( 3 \u0111i\u1ec3m): Cho h\u00ecnh ch\u00f3p S.ABCD c\u00f3 \u0111\u00e1y ABCD l\u00e0 h\u00ecnh vu\u00f4ng c\u1ea1nh a, […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/de-thi-hoc-ki-2-mon-toan-11-thpt-bac-son-2015\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - 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