Sự đồng quy của ba đường trung tuyến, ba đường phân giác trong một tam giác

Home Toán lớp 7 - Sách KNTT Bài 34: Sự đồng quy của ba đường trung tuyến, ba đường phân giác trong một tam giácBài tập trung bình

{"common":{"save":0,"post_id":"5840","level":2,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8712","post_id":"5840","mon_id":"1158532","chapter_id":"1158662","question":"Phát bi\u1ec3u nào sau \u0111ây là n\u1ed9i dung c\u1ee7a \u0111\u1ecbnh lí v\u1ec1 s\u1ef1 \u0111\u1ed3ng quy c\u1ee7a ba \u0111\u01b0\u1eddng phân giác trong m\u1ed9t tam giác?<\/p>","options":["A.<\/strong> Ba \u0111\u01b0\u1eddng phân giác c\u1ee7a m\u1ed9t tam giác \u0111\u1ed3ng quy t\u1ea1i m\u1ed9t \u0111i\u1ec3m. \u0110i\u1ec3m này cách \u0111\u1ec1u ba c\u1ea1nh c\u1ee7a tam giác.","B.<\/strong> Ba \u0111\u01b0\u1eddng phân giác c\u1ee7a m\u1ed9t tam giác \u0111\u1ed3ng quy t\u1ea1i m\u1ed9t \u0111i\u1ec3m. \u0110i\u1ec3m này cách \u0111\u1ec1u ba \u0111\u1ec9nh c\u1ee7a tam giác.","C.<\/strong> Ba \u0111\u01b0\u1eddng phân giác c\u1ee7a m\u1ed9t tam giác \u0111\u1ed3ng quy t\u1ea1i hai \u0111i\u1ec3m. \u0110i\u1ec3m này cách \u0111\u1ec1u ba c\u1ea1nh c\u1ee7a tam giác.","D.<\/strong> Ba \u0111\u01b0\u1eddng phân giác c\u1ee7a m\u1ed9t tam giác \u0111\u1ed3ng quy t\u1ea1i m\u1ed9t \u0111i\u1ec3m. \u0110i\u1ec3m này không cách \u0111\u1ec1u ba c\u1ea1nh c\u1ee7a tam giác."],"correct":"1","level":"2","hint":"","answer":"N\u1ed9i dung c\u1ee7a \u0111\u1ecbnh lí v\u1ec1 s\u1ef1 \u0111\u1ed3ng quy c\u1ee7a ba \u0111\u01b0\u1eddng phân giác trong m\u1ed9t tam giác là:<\/p> A.<\/strong> Ba \u0111\u01b0\u1eddng phân giác c\u1ee7a m\u1ed9t tam giác \u0111\u1ed3ng quy t\u1ea1i m\u1ed9t \u0111i\u1ec3m. \u0110i\u1ec3m này cách \u0111\u1ec1u ba c\u1ea1nh c\u1ee7a tam giác.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-04 08:47:34","option_type":"txt","len":3},{"id":"8715","post_id":"5840","mon_id":"1158532","chapter_id":"1158662","question":"Cho tam giác ABC có ba \u0111\u01b0\u1eddng trung tuy\u1ebfn AM, BN, CQ \u0111\u1ed3ng quy t\u1ea1i \u0111i\u1ec3m G. Khi \u0111ó \u0111i\u1ec3m G g\u1ecdi là <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p><svg height=\"150\" width=\"290\"> <g><title><\/title><rect fill=\"#fff\" height=\"152\" id=\"canvas_background\" width=\"292\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> <rect fill=\"url(#gridpattern)\" height=\"100%\" stroke-width=\"0\" width=\"100%\" x=\"0\" y=\"0\"><\/rect> <\/g> <\/g> <g><title><\/title><g id=\"svg_14\"> <g id=\"svg_4\"> <line fill=\"none\" id=\"svg_1\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"25.0125\" x2=\"248.0125\" y1=\"122\" y2=\"122\"><\/line> <line fill=\"none\" id=\"svg_2\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"88.0125\" x2=\"25.0125\" y1=\"18.2375\" y2=\"122.2375\"><\/line> <line fill=\"none\" id=\"svg_3\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"247.0125\" x2=\"87.0125\" y1=\"121.2375\" y2=\"17.2375\"><\/line> <\/g> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_5\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"87.0125\" x2=\"137.0125\" y1=\"17.2375\" y2=\"121.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_6\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"26.0125\" x2=\"169.0125\" y1=\"121.2375\" y2=\"71.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_7\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"247.0125\" x2=\"55.0125\" y1=\"121.2375\" y2=\"71.2375\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_8\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"61.0125\" xml:space=\"preserve\" y=\"20.2375\">A<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_9\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"4.0125\" xml:space=\"preserve\" y=\"127.2375\">B<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_10\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"259.0125\" xml:space=\"preserve\" y=\"127.2375\">C<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_11\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"133.0125\" xml:space=\"preserve\" y=\"147.2375\">M<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_12\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"178.0125\" xml:space=\"preserve\" y=\"61.2375\">N<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_13\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"31.0125\" xml:space=\"preserve\" y=\"75.2375\">Q<\/text> <\/g> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_15\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"115.0125\" xml:space=\"preserve\" y=\"80.2375\">G<\/text> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_16\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"85.0125\" x2=\"85.0125\" y1=\"117.2375\" y2=\"127.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_17\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"166.01251\" x2=\"169.01251\" y1=\"116.2375\" y2=\"128.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_18\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"42.0125\" x2=\"52.0125\" y1=\"85.2375\" y2=\"85.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_19\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"40.0125\" x2=\"50.0125\" y1=\"89.2375\" y2=\"89.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_20\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"67.0125\" x2=\"78.0125\" y1=\"42.2375\" y2=\"49.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_21\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"64.0125\" x2=\"75.0125\" y1=\"46.2375\" y2=\"53.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_22\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"124.0125\" x2=\"136.0125\" y1=\"46.2375\" y2=\"43.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_23\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"187.0125\" x2=\"197.0125\" y1=\"88.2375\" y2=\"83.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_24\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"129.0125\" x2=\"131.0125\" y1=\"37.2375\" y2=\"53.2375\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_25\" stroke=\"#000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"189.0125\" x2=\"194.0125\" y1=\"79.2375\" y2=\"92.2375\"><\/line> <\/g> <\/svg><\/span><\/p>","options":["A. <\/strong>tâm \u0111\u01b0\u1eddng tròn ngo\u1ea1i ti\u1ebfp tam giác ABC","B.<\/strong> tr\u1ef1c tâm c\u1ee7a tam giác ABC","C.<\/strong> tr\u1ecdng tâm c\u1ee7a tam giác ABC","D.<\/strong> tâm \u0111\u01b0\u1eddng tròn n\u1ed9i ti\u1ebfp tam giác ABC"],"correct":"3","level":"2","hint":"","answer":"Cho tam giác ABC có ba \u0111\u01b0\u1eddng trung tuy\u1ebfn AM, BN, CQ \u0111\u1ed3ng quy t\u1ea1i \u0111i\u1ec3m G. Khi \u0111ó \u0111i\u1ec3m G g\u1ecdi là <\/p>C.<\/strong> tr\u1ecdng tâm c\u1ee7a tam giác ABC<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-04 09:03:08","option_type":"txt","len":3},{"id":"8716","post_id":"5840","mon_id":"1158532","chapter_id":"1158662","question":"Cho tam giác ABC có hai \u0111\u01b0\u1eddng phân giác  AM và BN \u0111\u1ed3ng quy t\u1ea1i \u0111i\u1ec3m I. Khi \u0111ó CI là <input class=\"_tit_hoi\" disabled=\"disabled\" type=\"text\"\/><\/p>","options":["A.<\/strong> \u0111\u01b0\u1eddng trung tuy\u1ebfn xu\u1ea5t phát t\u1eeb \u0111\u1ec9nh C","B.<\/strong> \u0111\u01b0\u1eddng cao xu\u1ea5t phát t\u1eeb \u0111\u1ec9nh C","C.<\/strong> \u0111\u01b0\u1eddng trung tr\u1ef1c \u1ee9ng v\u1edbi c\u1ea1nh AB","D.<\/strong> \u0111\u01b0\u1eddng phân giác xu\u1ea5t phát t\u1eeb \u0111\u1ec9nh C"],"correct":"4","level":"2","hint":"Ba \u0111\u01b0\u1eddng phân giác c\u1ee7a m\u1ed9t tam giác \u0111\u1ed3ng quy t\u1ea1i m\u1ed9t \u0111i\u1ec3m. <\/p>","answer":"Vì ba \u0111\u01b0\u1eddng phân giác trong tam giác \u0111\u1ed3ng quy t\u1ea1i m\u1ed9t \u0111i\u1ec3m mà hai \u0111\u01b0\u1eddng phân giác  AM và BN \u0111\u1ed3ng quy t\u1ea1i \u0111i\u1ec3m I.<\/p>nên CI là  D.<\/strong> \u0111\u01b0\u1eddng phân giác xu\u1ea5t phát t\u1eeb \u0111\u1ec9nh C<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-04 09:08:43","option_type":"txt","len":3}]}