{"id":815,"date":"2019-11-28T07:00:09","date_gmt":"2019-11-28T00:00:09","guid":{"rendered":"http:\/\/www.truyenthong.edu.vn\/?p=815"},"modified":"2019-11-28T07:00:09","modified_gmt":"2019-11-28T00:00:09","slug":"tinh-chat-3-duong-trung-truc-cua-tam-giac-va-ung-dung","status":"publish","type":"post","link":"https:\/\/truyenthong.edu.vn\/sanpham\/2019\/11\/28\/tinh-chat-3-duong-trung-truc-cua-tam-giac-va-ung-dung\/","title":{"rendered":"T\u00ednh ch\u1ea5t 3 \u0111\u01b0\u1eddng trung tr\u1ef1c c\u1ee7a tam gi\u00e1c v\u00e0 \u1ee9ng d\u1ee5ng"},"content":{"rendered":"\n<p>B\u00e0i t\u1eadp 1. Cho tam gi\u00e1c ABC c\u00e2n t\u1ea1i \u0111\u1ec9nh A, trung tr\u1ef1c c\u1ee7a c\u1ea1nh AC c\u1eaft CB t\u1ea1i \u0111i\u1ec3m D ( C\u1ea1nh \u0111\u00e1y b\u00e9 nh\u1ea5t ) tr\u00ean tia \u0111\u1ed1i tia AD l\u1ea5y E sao cho AE = BD Ch\u1ee9ng minh tam gi\u00e1c DCE c\u00e2n.<\/p>\n\n\n<p>B\u00e0i t\u1eadp 2. Cho tam gi\u00e1c \u0111\u1ec1u ABC. G\u1ecdi D v\u00e0 E l\u00e0 hai \u0111i\u1ec3m l\u1ea7n l\u01b0\u1ee3t tr\u00ean hai c\u1ea1nh AB v\u00e0 AC sao cho BD = AE. Ch\u1ee9ng minh r\u1eb1ng c\u00e1c \u0111\u01b0\u1eddng trung tr\u1ef1c c\u1ee7a \u0111o\u1ea1n DE lu\u00f4n \u0111i qua m\u1ed9t \u0111i\u1ec3m c\u1ed1 \u0111\u1ecbnh khi D v\u00e0 E di chuy\u1ec3n tr\u00ean c\u00e1c c\u1ea1nh c\u1ee7a AB  v\u00e0 AC.<\/p>\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/gdurl.com\/NoDy\" alt=\"\" width=\"375\" height=\"265\"\/><figcaption>3 \u0111\u01b0\u1eddng trung tr\u1ef1c c\u1ee7a tam gi\u00e1c<\/figcaption><\/figure><\/div>\n\n\n<!--more-->\n\n\n<p>Th\u00f4ng tin v\u1ec1 s\u1ea3n ph\u1ea9m:<\/p>\n\n\n<ul class=\"wp-block-list\"><li>H\u1ecdc ph\u1ea7n: \u1ee8ng d\u1ee5ng CNTT&amp;TT trong Gi\u00e1o d\u1ee5c To\u00e1n<\/li><li>N\u0103m: 2013<\/li><li>T\u00e1c gi\u1ea3:\u00a0Hu\u1ef3nh Ng\u1ecdc D\u0169ng<\/li><li>T\u1ea3i v\u1ec1 (gsp):\u00a0<a href=\"https:\/\/drive.google.com\/file\/d\/1ibV2YVTQEtfFjH-Lb4ymUkiZ4eRhr3h4\/view?usp=sharing\">M\u00f4 h\u00ecnh GSP<\/a><\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>B\u00e0i t\u1eadp 1. Cho tam gi\u00e1c ABC c\u00e2n t\u1ea1i \u0111\u1ec9nh A, trung tr\u1ef1c c\u1ee7a c\u1ea1nh AC c\u1eaft CB t\u1ea1i \u0111i\u1ec3m D ( C\u1ea1nh \u0111\u00e1y b\u00e9 nh\u1ea5t ) tr\u00ean tia \u0111\u1ed1i tia AD l\u1ea5y E sao cho AE = BD Ch\u1ee9ng minh tam gi\u00e1c DCE c\u00e2n. B\u00e0i t\u1eadp 2. Cho tam gi\u00e1c \u0111\u1ec1u ABC. G\u1ecdi D [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12],"tags":[64,80,133,143],"class_list":["post-815","post","type-post","status-publish","format-standard","hentry","category-ung-dung-ict-trong-giao-duc-toan","tag-giao-an","tag-hinh-hoc-phang","tag-sketchpad","tag-tam-giac"],"_links":{"self":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts\/815","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/comments?post=815"}],"version-history":[{"count":0,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/posts\/815\/revisions"}],"wp:attachment":[{"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/media?parent=815"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/categories?post=815"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/truyenthong.edu.vn\/sanpham\/wp-json\/wp\/v2\/tags?post=815"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}