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 trung bình

{"common":{"save":0,"post_id":"5692","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7273","post_id":"5692","mon_id":"1158532","chapter_id":"1158546","question":"Th\u1ebf nào là ch\u1ee9ng minh m\u1ed9t \u0111\u1ecbnh lí?<\/p>","options":["A.<\/strong> Là dùng l\u1eadp lu\u1eadn \u0111\u1ec3 t\u1eeb gi\u1ea3 thi\u1ebft và nh\u1eefng kh\u1eb3ng \u0111\u1ecbnh \u0111úng \u0111ã bi\u1ebft suy ra k\u1ebft lu\u1eadn c\u1ee7a \u0111\u1ecbnh lí","B.<\/strong> Là dùng l\u1eadp lu\u1eadn \u0111\u1ec3 t\u1eeb gi\u1ea3 thi\u1ebft suy ra k\u1ebft lu\u1eadn c\u1ee7a \u0111\u1ecbnh lí","C. <\/strong>Là dùng l\u1eadp lu\u1eadn \u0111\u1ec3 t\u1eeb nh\u1eefng kh\u1eb3ng \u0111\u1ecbnh \u0111úng \u0111ã bi\u1ebft \u0111\u1ec3 suy ra k\u1ebft lu\u1eadn c\u1ee7a \u0111\u1ecbnh lí"],"correct":"1","level":"2","hint":"","answer":"Ch\u1ee9ng minh m\u1ed9t \u0111\u1ecbnh lí là: <\/p>A.<\/strong> Là dùng l\u1eadp lu\u1eadn \u0111\u1ec3 t\u1eeb gi\u1ea3 thi\u1ebft và nh\u1eefng kh\u1eb3ng \u0111\u1ecbnh \u0111úng \u0111ã bi\u1ebft suy ra k\u1ebft lu\u1eadn c\u1ee7a \u0111\u1ecbnh lí<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-21 08:46:04","option_type":"txt","len":3},{"id":"7274","post_id":"5692","mon_id":"1158532","chapter_id":"1158546","question":"K\u1ebft lu\u1eadn c\u1ee7a \u0111\u1ecbnh lí: "M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vuông góc v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song thì nó c\u0169ng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i"<\/span> là:<\/p>","options":["A.<\/strong> M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vuông góc v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song","B.<\/strong> nó c\u0169ng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i","C. <\/strong>hai \u0111\u01b0\u1eddng th\u1eb3ng song song thì nó c\u0169ng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i"],"correct":"2","level":"2","hint":"","answer":"K\u1ebft lu\u1eadn c\u1ee7a \u0111\u1ecbnh lí: "M\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng vuông góc v\u1edbi m\u1ed9t trong hai \u0111\u01b0\u1eddng th\u1eb3ng song song thì nó c\u0169ng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i" <\/span>là:<\/p>B.<\/strong> nó c\u0169ng vuông góc v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng còn l\u1ea1i<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-21 09:02:39","option_type":"txt","len":3},{"id":"7275","post_id":"5692","mon_id":"1158532","chapter_id":"1158546","question":"Gi\u1ea3 thi\u1ebft c\u1ee7a \u0111\u1ecbnh lí: "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> là:<\/p>","options":["A.<\/strong> chúng song song v\u1edbi nhau","B.<\/strong> Hai \u0111\u01b0\u1eddng th\u1eb3ng cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba","C. <\/strong>Hai \u0111\u01b0\u1eddng th\u1eb3ng phân bi\u1ec7t cùng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba"],"correct":"3","level":"2","hint":"","answer":"Gi\u1ea3 thi\u1ebft c\u1ee7a \u0111\u1ecbnh lí: "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" là:<\/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<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-04-21 09:06:24","option_type":"txt","len":3}]}