\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean, c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y:<\/strong><\/h2>\n\nXem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n<\/p>\n<\/div>\n
C\u00e2u 6<\/strong> (1,0 \u0111i\u1ec3m<\/em>).<\/strong><\/p>\n Cho h\u00ecnh ch\u00f3pS.ABC<\/em> c\u00f3 \u0111\u00e1y ABC<\/em> l\u00e0 tam gi\u00e1c vu\u00f4ng t\u1ea1i B<\/em>, BA<\/em> = 3a<\/em>, BC<\/em> = 4a<\/em>v\u00e0 A<\/em>B<\/em> vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng (S<\/em>BC<\/em>). Bi\u1ebft SB<\/em> = 2a\u221a3<\/em> v\u00e0 g\u00f3c SBC = 30 \u0111\u1ed9. T\u00ednh th\u1ec3 t\u00edch kh\u1ed1i ch\u00f3p S.ABC<\/em> v\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb \u0111i\u1ec3m B<\/em> \u0111\u1ebfn m\u1eb7t ph\u1eb3ng (SAC<\/em>) theo a<\/em>.<\/p>\nC\u00e2u 7<\/strong> (1,0 \u0111i\u1ec3m<\/em>).<\/strong><\/p>\nTrong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy<\/em>, cho h\u00ecnh ch\u1eef nh\u1eadt ABCD<\/em> c\u00f3 \u0111i\u1ec3m C<\/em> thu\u1ed9c \u0111\u01b0\u1eddng th\u1eb3ng d: 2x + y + 5 = 0 v\u00e0 A<\/em>(4; 8). G\u1ecdi E<\/em> l\u00e0 \u0111i\u1ec3m \u0111\u1ed1i x\u1ee9ng v\u1edbi B<\/em> qua C<\/em>, F<\/em>(5; 4) l\u00e0 h\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a B <\/em>tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng ED<\/em>. T\u00ecm t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m C<\/em> v\u00e0 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt ABCD<\/em>.<\/p>\n![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1230\/2015-12-30-104031.png\")
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\u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean <\/h2>\n
![](\"http:\/\/img.toanhoc247.com\/picture\/2015\/1230\/2015-12-30-104244-1.png\")
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<\/em><\/p>\nT\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean, c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n C\u00e2u 6 (1,0 \u0111i\u1ec3m). Cho h\u00ecnh ch\u00f3pS.ABC c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c vu\u00f4ng t\u1ea1i B, BA = 3a, BC = 4av\u00e0 AB vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng (SBC). Bi\u1ebft SB = […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[28],"tags":[],"yoast_head":"\n
\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 - THPT Ng\u00f4 S\u0129 Li\u00ean<\/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-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 - THPT Ng\u00f4 S\u0129 Li\u00ean\" \/>\n<meta property=\"og:description\" content=\"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean, c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n C\u00e2u 6 (1,0 \u0111i\u1ec3m). Cho h\u00ecnh ch\u00f3pS.ABC c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c vu\u00f4ng t\u1ea1i B, BA = 3a, BC = 4av\u00e0 AB vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng (SBC). Bi\u1ebft SB = […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/\" \/>\n<meta property=\"og:site_name\" content=\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam\" \/>\n<meta property=\"article:author\" content=\"www.facebook.com\/lop12.edu.vn\/\" \/>\n<meta property=\"article:published_time\" content=\"2016-03-19T22:49:30+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2016-03-20T15:52:29+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/img.toanhoc247.com\/picture\/2015\/1230\/2015-12-30-104031.png\" \/>\n<meta name=\"author\" content=\"Lop12\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Lop12\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/\",\"url\":\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/\",\"name\":\"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 - THPT Ng\u00f4 S\u0129 Li\u00ean\",\"isPartOf\":{\"@id\":\"https:\/\/lop12.edu.vn\/#website\"},\"datePublished\":\"2016-03-19T22:49:30+00:00\",\"dateModified\":\"2016-03-20T15:52:29+00:00\",\"author\":{\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/8219caa3d91a087a4ce81b8b5ac734b5\"},\"breadcrumb\":{\"@id\":\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/lop12.edu.vn\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/lop12.edu.vn\/#website\",\"url\":\"https:\/\/lop12.edu.vn\/\",\"name\":\"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/lop12.edu.vn\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/8219caa3d91a087a4ce81b8b5ac734b5\",\"name\":\"Lop12\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/65b2897b6a31b932be1276ba7fc18d41?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/65b2897b6a31b932be1276ba7fc18d41?s=96&d=mm&r=g\",\"caption\":\"Lop12\"},\"sameAs\":[\"http:\/\/www.lop12.edu.vn\",\"www.facebook.com\/lop12.edu.vn\/\"],\"url\":\"https:\/\/lop12.edu.vn\/author\/hungld\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 - THPT Ng\u00f4 S\u0129 Li\u00ean","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/","og_locale":"en_US","og_type":"article","og_title":"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 - THPT Ng\u00f4 S\u0129 Li\u00ean","og_description":"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean, c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n C\u00e2u 6 (1,0 \u0111i\u1ec3m). Cho h\u00ecnh ch\u00f3pS.ABC c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c vu\u00f4ng t\u1ea1i B, BA = 3a, BC = 4av\u00e0 AB vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng (SBC). Bi\u1ebft SB = […]","og_url":"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/","og_site_name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12 l\u1edbn nh\u1ea5t t\u1ea1i Vi\u1ec7t Nam","article_author":"www.facebook.com\/lop12.edu.vn\/","article_published_time":"2016-03-19T22:49:30+00:00","article_modified_time":"2016-03-20T15:52:29+00:00","og_image":[{"url":"http:\/\/img.toanhoc247.com\/picture\/2015\/1230\/2015-12-30-104031.png"}],"author":"Lop12","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Lop12","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/","url":"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/","name":"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 - THPT Ng\u00f4 S\u0129 Li\u00ean","isPartOf":{"@id":"https:\/\/lop12.edu.vn\/#website"},"datePublished":"2016-03-19T22:49:30+00:00","dateModified":"2016-03-20T15:52:29+00:00","author":{"@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/8219caa3d91a087a4ce81b8b5ac734b5"},"breadcrumb":{"@id":"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/lop12.edu.vn\/de-thi-thu-thpt-quoc-gia-mon-toan-nam-2016-thpt-ngo-si-lien\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/lop12.edu.vn\/"},{"@type":"ListItem","position":2,"name":"\u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean"}]},{"@type":"WebSite","@id":"https:\/\/lop12.edu.vn\/#website","url":"https:\/\/lop12.edu.vn\/","name":"Lop12.edu.vn - C\u1ed9ng \u0111\u1ed3ng h\u1ecdc sinh l\u1edbp 12","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/lop12.edu.vn\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/8219caa3d91a087a4ce81b8b5ac734b5","name":"Lop12","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/lop12.edu.vn\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/65b2897b6a31b932be1276ba7fc18d41?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/65b2897b6a31b932be1276ba7fc18d41?s=96&d=mm&r=g","caption":"Lop12"},"sameAs":["http:\/\/www.lop12.edu.vn","www.facebook.com\/lop12.edu.vn\/"],"url":"https:\/\/lop12.edu.vn\/author\/hungld\/"}]}},"_links":{"self":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/1421"}],"collection":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/comments?post=1421"}],"version-history":[{"count":0,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/posts\/1421\/revisions"}],"wp:attachment":[{"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/media?parent=1421"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/categories?post=1421"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lop12.edu.vn\/wp-json\/wp\/v2\/tags?post=1421"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n<\/p>\n<\/div>\n
C\u00e2u 6<\/strong> (1,0 \u0111i\u1ec3m<\/em>).<\/strong><\/p>\n Cho h\u00ecnh ch\u00f3pS.ABC<\/em> c\u00f3 \u0111\u00e1y ABC<\/em> l\u00e0 tam gi\u00e1c vu\u00f4ng t\u1ea1i B<\/em>, BA<\/em> = 3a<\/em>, BC<\/em> = 4a<\/em>v\u00e0 A<\/em>B<\/em> vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng (S<\/em>BC<\/em>). Bi\u1ebft SB<\/em> = 2a\u221a3<\/em> v\u00e0 g\u00f3c SBC = 30 \u0111\u1ed9. T\u00ednh th\u1ec3 t\u00edch kh\u1ed1i ch\u00f3p S.ABC<\/em> v\u00e0 kho\u1ea3ng c\u00e1ch t\u1eeb \u0111i\u1ec3m B<\/em> \u0111\u1ebfn m\u1eb7t ph\u1eb3ng (SAC<\/em>) theo a<\/em>.<\/p>\n C\u00e2u 7<\/strong> (1,0 \u0111i\u1ec3m<\/em>).<\/strong><\/p>\n Trong m\u1eb7t ph\u1eb3ng v\u1edbi h\u1ec7 t\u1ecda \u0111\u1ed9 Oxy<\/em>, cho h\u00ecnh ch\u1eef nh\u1eadt ABCD<\/em> c\u00f3 \u0111i\u1ec3m C<\/em> thu\u1ed9c \u0111\u01b0\u1eddng th\u1eb3ng d: 2x + y + 5 = 0 v\u00e0 A<\/em>(4; 8). G\u1ecdi E<\/em> l\u00e0 \u0111i\u1ec3m \u0111\u1ed1i x\u1ee9ng v\u1edbi B<\/em> qua C<\/em>, F<\/em>(5; 4) l\u00e0 h\u00ecnh chi\u1ebfu vu\u00f4ng g\u00f3c c\u1ee7a B <\/em>tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng ED<\/em>. T\u00ecm t\u1ecda \u0111\u1ed9 \u0111i\u1ec3m C<\/em> v\u00e0 t\u00ednh di\u1ec7n t\u00edch h\u00ecnh ch\u1eef nh\u1eadt ABCD<\/em>.<\/p>\n <\/em><\/p>\n T\u1ea5t c\u1ea3 n\u1ed9i dung b\u00e0i vi\u1ebft. C\u00e1c em h\u00e3y xem th\u00eam v\u00e0 t\u1ea3i file chi ti\u1ebft t\u1ea1i \u0111\u00e2y:<\/strong>Download<\/p>\n","protected":false},"excerpt":{"rendered":" \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean, c\u00f3 \u0111\u00e1p \u00e1n chi ti\u1ebft, c\u00e1c em tham kh\u1ea3o d\u01b0\u1edbi \u0111\u00e2y: Xem th\u00eam: \u0110\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n C\u00e2u 6 (1,0 \u0111i\u1ec3m). Cho h\u00ecnh ch\u00f3pS.ABC c\u00f3 \u0111\u00e1y ABC l\u00e0 tam gi\u00e1c vu\u00f4ng t\u1ea1i B, BA = 3a, BC = 4av\u00e0 AB vu\u00f4ng g\u00f3c v\u1edbi m\u1eb7t ph\u1eb3ng (SBC). Bi\u1ebft SB = […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[28],"tags":[],"yoast_head":"\n<\/p>\n\u0110\u00e1p \u00e1n \u0111\u1ec1 thi th\u1eed THPT Qu\u1ed1c gia m\u00f4n To\u00e1n n\u0103m 2016 – THPT Ng\u00f4 S\u0129 Li\u00ean <\/h2>\n
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