Quan hệ giữa ba cạnh của một tam giác

Home Toán lớp 7 - Sách KNTT Bài 33: Quan hệ giữa ba cạnh của một tam giácBài tập cơ bản

{"common":{"save":0,"post_id":"5836","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8749","post_id":"5836","mon_id":"1158532","chapter_id":"1158662","question":"Phát bi\u1ec3u nào sau \u0111ây là \u0111úng?<\/p>","options":["A.<\/strong> Trong m\u1ed9t tam giác, \u0111\u1ed9 dài c\u1ee7a m\u1ed9t c\u1ea1nh b\u1ea5t kì luôn nh\u1ecf h\u01a1n t\u1ed5ng \u0111\u1ed9 dài hai c\u1ea1nh còn l\u1ea1i.","B.<\/strong> Trong m\u1ed9t tam giác, \u0111\u1ed9 dài c\u1ee7a m\u1ed9t c\u1ea1nh b\u1ea5t kì luôn l\u1edbn h\u01a1n t\u1ed5ng \u0111\u1ed9 dài hai c\u1ea1nh còn l\u1ea1i."],"correct":"1","level":"1","hint":"Trong m\u1ed9t tam giác, \u0111\u1ed9 dài c\u1ee7a m\u1ed9t c\u1ea1nh b\u1ea5t kì luôn nh\u1ecf h\u01a1n t\u1ed5ng \u0111\u1ed9 dài hai c\u1ea1nh còn l\u1ea1i.<\/p>","answer":"\u0110áp án \u0111úng là   A.<\/strong> Trong m\u1ed9t tam giác, \u0111\u1ed9 dài c\u1ee7a m\u1ed9t c\u1ea1nh b\u1ea5t kì luôn nh\u1ecf h\u01a1n t\u1ed5ng \u0111\u1ed9 dài hai c\u1ea1nh còn l\u1ea1i.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-06 00:12:40","option_type":"txt","len":3},{"id":"8750","post_id":"5836","mon_id":"1158532","chapter_id":"1158662","question":"Phát bi\u1ec3u nào sau \u0111ây là \u0111úng?<\/p>","options":["A.<\/strong> Trong m\u1ed9t tam giác, t\u1ed5ng \u0111\u1ed9 dài c\u1ee7a hai c\u1ea1nh b\u1ea5t kì luôn nh\u1ecf h\u01a1n \u0111\u1ed9 dài c\u1ea1nh còn l\u1ea1i.","B.<\/strong> Trong m\u1ed9t tam giác, t\u1ed5ng \u0111\u1ed9 dài c\u1ee7a hai c\u1ea1nh b\u1ea5t kì luôn l\u1edbn h\u01a1n \u0111\u1ed9 dài c\u1ea1nh còn l\u1ea1i."],"correct":"2","level":"1","hint":"Trong m\u1ed9t tam giác, t\u1ed5ng \u0111\u1ed9 dài c\u1ee7a hai c\u1ea1nh b\u1ea5t kì luôn l\u1edbn h\u01a1n \u0111\u1ed9 dài c\u1ea1nh còn l\u1ea1i.<\/p>","answer":"\u0110áp án \u0111úng là   B.<\/strong> Trong m\u1ed9t tam giác, t\u1ed5ng \u0111\u1ed9 dài c\u1ee7a hai c\u1ea1nh b\u1ea5t kì luôn l\u1edbn h\u01a1n \u0111\u1ed9 dài c\u1ea1nh còn l\u1ea1i.<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-06 00:14:31","option_type":"txt","len":3},{"id":"8751","post_id":"5836","mon_id":"1158532","chapter_id":"1158662","question":"Cho tam giác MNP. Kh\u1eb3ng \u0111\u1ecbnh nào d\u01b0\u1edbi \u0111ây là \u0111úng?<\/p><svg height=\"150\" width=\"250\"> <g><title><\/title><rect fill=\"#fff\" height=\"152\" id=\"canvas_background\" width=\"252\" 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><path d=\"m73.72618,182.67086l0,-138.10907l104.99863,138.10907l-104.99863,0z\" fill=\"#fff\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" transform=\"rotate(127.51248168945312 126.22549438476565,113.61632537841795) \"><\/path> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_2\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"75.9\" xml:space=\"preserve\" y=\"24.2375\">M<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_3\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"223.9\" xml:space=\"preserve\" y=\"120.2375\">N<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"24\" id=\"svg_4\" stroke=\"#000\" stroke-opacity=\"null\" stroke-width=\"0\" text-anchor=\"start\" x=\"12.9\" xml:space=\"preserve\" y=\"126.2375\">P<\/text> <\/g> <\/svg><\/span><\/p>","options":["A.<\/strong> MN + NP < PM","B.<\/strong> MN + NP = PM","C.<\/strong> MN + NP > PM"],"correct":"3","level":"1","hint":"Trong m\u1ed9t tam giác, \u0111\u1ed9 dài c\u1ee7a m\u1ed9t c\u1ea1nh b\u1ea5t kì luôn nh\u1ecf h\u01a1n t\u1ed5ng \u0111\u1ed9 dài hai c\u1ea1nh còn l\u1ea1i.<\/p>","answer":"Trong m\u1ed9t tam giác, \u0111\u1ed9 dài c\u1ee7a m\u1ed9t c\u1ea1nh b\u1ea5t kì luôn nh\u1ecf h\u01a1n t\u1ed5ng \u0111\u1ed9 dài hai c\u1ea1nh còn l\u1ea1i.<\/p>Do \u0111ó trong tam giác MNP ta có:<\/p>MN < NP + PM  ;  NP < MN + PM  ;   PM < MN + NP<\/span><\/p>\u0110áp án \u0111úng là  C.<\/strong> MN + NP > PM<\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2022-06-06 00:16:45","option_type":"txt","len":2}]}