Định lí và chứng minh định lí

Home Lớp 7 Toán lớp 7 - Sách kết nối tri thức Bài 11: Định lí và chứng minh định líBài tập nâng cao

{"common":{"save":0,"post_id":"5694","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7285","post_id":"5694","mon_id":"1158532","chapter_id":"1158546","question":"Hãy phát bi\u1ec3u \u0111\u1ecbnh lí v\u1ec1 hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba.<\/p>","options":["A. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng song song v\u1edbi nhau.","B. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng song song v\u1edbi nhau.","C. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng vuông góc v\u1edbi nhau.","D. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng c\u1eaft nhau."],"correct":"2","level":"3","hint":"","answer":"A. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng<\/span> cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng song song v\u1edbi nhau.                                          Sai vì thi\u1ebfu gi\u1ea3 thi\u1ebft hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t<\/p>C. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng vuông góc<\/span> v\u1edbi nhau.                          Sai k\u1ebft lu\u1eadn hai \u0111\u01b0\u1eddng th\u1eb3ng \u0111ó song song v\u1edbi nhau<\/p>D. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng c\u1eaft nhau<\/span>.                                      Sai k\u1ebft lu\u1eadn hai \u0111\u01b0\u1eddng th\u1eb3ng \u0111ó song song v\u1edbi nhau<\/p>\u0110áp án \u0111úng là B. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng song song v\u1edbi nhau.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-22 08:25:45","option_type":"txt","len":3},{"id":"7287","post_id":"5694","mon_id":"1158532","chapter_id":"1158546","question":"Dùng kí hi\u1ec7u \u0111\u1ec3 vi\u1ebft l\u1ea1i gi\u1ea3 thi\u1ebft c\u1ee7a \u0111\u1ecbnh lí:<\/p>"Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t a và b cùng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c thì a và b song song v\u1edbi nhau"<\/p>","options":["A. <\/strong>a và b phân bi\u1ec7t","B. <\/strong>a &perp; c, b &perp; c","C. <\/strong>a và b phân bi\u1ec7t, a &perp; c, b &perp; c","D. <\/strong>a và b phân bi\u1ec7t, a \/\/ b"],"correct":"3","level":"3","hint":"","answer":"Dùng kí hi\u1ec7u \u0111\u1ec3 vi\u1ebft l\u1ea1i gi\u1ea3 thi\u1ebft c\u1ee7a \u0111\u1ecbnh lí:<\/p>"Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba thì chúng song song v\u1edbi nhau"<\/p>\u0110áp án \u0111úng là  C. <\/strong>a và b phân bi\u1ec7t, a &perp; c, b &perp; c<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-22 08:31:02","option_type":"txt","len":3},{"id":"7289","post_id":"5694","mon_id":"1158532","chapter_id":"1158546","question":"Dùng kí hi\u1ec7u \u0111\u1ec3 vi\u1ebft l\u1ea1i gi\u1ea3 thi\u1ebft c\u1ee7a \u0111\u1ecbnh lí sau:<\/p>"Hai góc \u0111\u1ed1i \u0111\u1ec9nh thì b\u1eb1ng nhau"<\/p>","options":["A. <\/strong>$\\widehat{O_1}=\\widehat{O_2}$<\/span>","B. <\/strong>$\\widehat{O_1}$<\/span>, $\\widehat{O_2}$<\/span> là hai góc k\u1ec1 bù","C. <\/strong>$\\widehat{O_1}$<\/span>, $\\widehat{O_2}$<\/span> là hai góc","D. <\/strong>$\\widehat{O_1}$<\/span>, $\\widehat{O_2}$<\/span> là hai góc \u0111\u1ed1i \u0111\u1ec9nh"],"correct":"4","level":"3","hint":"","answer":"Dùng kí hi\u1ec7u \u0111\u1ec3 vi\u1ebft l\u1ea1i gi\u1ea3 thi\u1ebft c\u1ee7a \u0111\u1ecbnh lí sau:<\/p>"Hai góc \u0111\u1ed1i \u0111\u1ec9nh thì b\u1eb1ng nhau"<\/p>\u0110áp án \u0111úng là  D. <\/strong>$\\widehat{O_1}$<\/span>, $\\widehat{O_2}$<\/span> là hai góc \u0111\u1ed1i \u0111\u1ec9nh<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-22 08:39:13","option_type":"math","len":0}]}