Hình có trục đối xứng

Home Toán lớp 6 (Sách KNTT)Toán lớp 6 Tập 1 Bài 21: Hình có trục đối xứngBài tập nâng cao

{"common":{"save":0,"post_id":"4638","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7050","post_id":"4638","mon_id":"1158113","chapter_id":"1158130","question":"Hình tròn có bao nhiêu tr\u1ee5c \u0111\u1ed1i x\u1ee9ng?<\/p><svg height=\"180\" width=\"200\"> <g><title><\/title><rect fill=\"#fff\" height=\"182\" id=\"canvas_background\" width=\"202\" 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><ellipse cx=\"88.9\" cy=\"83.35\" fill=\"#ffffaa\" id=\"svg_1\" rx=\"72\" ry=\"71.5\" stroke=\"#000\" stroke-width=\"1.5\"><\/ellipse> <line fill=\"none\" id=\"svg_2\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"-2.1\" x2=\"207.9\" y1=\"82.85\" y2=\"83\"><\/line> <line fill=\"none\" id=\"svg_3\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"88.9\" x2=\"88.9\" y1=\"-0.15\" y2=\"180.85\"><\/line> <line fill=\"none\" id=\"svg_4\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"16.9\" x2=\"172.9\" y1=\"23.85\" y2=\"151.85001\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_5\" stroke=\"#000\" stroke-dasharray=\"5,5\" stroke-linecap=\"null\" stroke-linejoin=\"null\" stroke-opacity=\"null\" stroke-width=\"1.5\" x1=\"118.9\" x2=\"48.9\" y1=\"6.85\" y2=\"183.85\"><\/line> <\/g> <\/svg><\/span><\/p>","options":["1","4","Vô s\u1ed1 tr\u1ee5c \u0111\u1ed1i x\u1ee9ng","10"],"correct":"3","level":"3","hint":"M\u1ed7i \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua tâm là m\u1ed9t tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình tròn.<\/p>","answer":"M\u1ed7i \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua tâm là m\u1ed9t tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình tròn.<\/p>Có vô s\u1ed1 \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua tâm c\u1ee7a hình tròn. <\/p>Do \u0111ó hình tròn có vô s\u1ed1 tr\u1ee5c \u0111\u1ed1i x\u1ee9ng.<\/p>V\u1eady \u0111áp án là Vô s\u1ed1 tr\u1ee5c \u0111\u1ed1i x\u1ee9ng<\/span><\/strong><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-09-02 02:30:23","option_type":"txt","len":2},{"id":"7054","post_id":"4638","mon_id":"1158113","chapter_id":"1158130","question":"Tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông là nh\u1eefng \u0111\u01b0\u1eddng th\u1eb3ng nào d\u01b0\u1edbi \u0111ây?<\/p><svg height=\"180\" width=\"200\"> <g><title><\/title><rect fill=\"#fff\" height=\"182\" id=\"canvas_background\" width=\"202\" 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><rect fill=\"#ffff00\" height=\"116\" id=\"svg_1\" stroke=\"#000\" stroke-width=\"1.5\" width=\"116\" x=\"27.9\" y=\"19.85\"><\/rect> <line fill=\"none\" id=\"svg_2\" stroke=\"#00bfbf\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"85.9\" x2=\"86\" y1=\"0.85\" y2=\"176.85\"><\/line> <line fill=\"none\" id=\"svg_3\" stroke=\"#00bf00\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"11.9\" x2=\"168.9\" y1=\"3.85\" y2=\"160.85\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_4\" stroke=\"#ff0000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"158.9\" x2=\"1.9\" y1=\"5.85\" y2=\"160.85\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_6\" stroke=\"#000000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"1.5\" x1=\"0.9\" x2=\"190\" y1=\"77.85\" y2=\"78\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_7\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"12.9\" xml:space=\"preserve\" y=\"165.85\">a<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_8\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"92.9\" xml:space=\"preserve\" y=\"166.85\">b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_9\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"172.9\" xml:space=\"preserve\" y=\"152.85\">c<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_10\" stroke=\"#000000\" stroke-width=\"0\" text-anchor=\"start\" x=\"177.9\" xml:space=\"preserve\" y=\"73.85\">d<\/text> <\/g> <\/svg><\/span><\/p>","options":["Hai \u0111\u01b0\u1eddng th\u1eb3ng a và c","Hai \u0111\u01b0\u1eddng th\u1eb3ng b và d","C\u1ea3 b\u1ed1n \u0111\u01b0\u1eddng th\u1eb3ng a, b, c và d"],"correct":"3","level":"3","hint":"M\u1ed7i \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua trung \u0111i\u1ec3m hai c\u1ea1nh \u0111\u1ed1i di\u1ec7n là m\u1ed9t tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông.<\/p>M\u1ed7i \u0111\u01b0\u1eddng chéo là m\u1ed9t tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông.<\/p>","answer":"M\u1ed7i \u0111\u01b0\u1eddng th\u1eb3ng \u0111i qua trung \u0111i\u1ec3m hai c\u1ea1nh \u0111\u1ed1i di\u1ec7n là m\u1ed9t tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông.<\/p>Do \u0111ó hai \u0111\u01b0\u1eddng th\u1eb3ng b và d là tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông.<\/strong><\/p>M\u1ed7i \u0111\u01b0\u1eddng chéo là m\u1ed9t tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông.<\/p>Do \u0111ó hai \u0111\u01b0\u1eddng th\u1eb3ng a và c là tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông.<\/strong><\/p>V\u1eady c\u1ea3 b\u1ed1n \u0111\u01b0\u1eddng th\u1eb3ng a, b, c, d \u0111\u1ec1u là tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình vuông.<\/p>\u0110áp án \u0111úng là C\u1ea3 b\u1ed1n \u0111\u01b0\u1eddng th\u1eb3ng a, b, c và d<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-09-02 02:47:13","option_type":"txt","len":2},{"id":"7057","post_id":"4638","mon_id":"1158113","chapter_id":"1158130","question":"Xác \u0111\u1ecbnh tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình sau?<\/p><svg height=\"220\" width=\"200\" xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\"> <g><title><\/title><rect fill=\"#fff\" height=\"222\" id=\"canvas_background\" width=\"202\" x=\"-1\" y=\"-1\"><\/rect> <g display=\"none\" height=\"100%\" id=\"canvasGrid\" overflow=\"visible\" width=\"100%\" x=\"0\" y=\"0\"> 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y=\"15\"><\/image> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_8\" stroke=\"#000000\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"2\" x1=\"97.9\" x2=\"97.9\" y1=\"-18\" y2=\"218\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_9\" stroke=\"#00bf00\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"2\" x1=\"14.9\" x2=\"180.90001\" y1=\"21\" y2=\"185.99999\"><\/line> <line fill=\"none\" fill-opacity=\"null\" id=\"svg_10\" stroke=\"#0000bf\" stroke-linecap=\"undefined\" stroke-linejoin=\"undefined\" stroke-width=\"2\" transform=\"rotate(1 98.40000915527388,102.0000000000005) \" x1=\"186.9\" x2=\"9.90001\" y1=\"10\" y2=\"193.99999\"><\/line> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_13\" stroke=\"#0000bf\" stroke-width=\"0\" text-anchor=\"start\" x=\"20.9\" xml:space=\"preserve\" y=\"198\">a<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_14\" stroke=\"#0000bf\" stroke-width=\"0\" text-anchor=\"start\" x=\"104.9\" xml:space=\"preserve\" y=\"211\">b<\/text> <text fill=\"#000000\" fill-opacity=\"null\" font-family=\"Helvetica, Arial, sans-serif\" font-size=\"20\" id=\"svg_15\" stroke=\"#0000bf\" stroke-width=\"0\" text-anchor=\"start\" x=\"179.9\" xml:space=\"preserve\" y=\"177\">c<\/text> <\/g> <\/svg><\/span><\/p>","options":["\u0110\u01b0\u1eddng th\u1eb3ng a","\u0110\u01b0\u1eddng th\u1eb3ng b","\u0110\u01b0\u1eddng th\u1eb3ng c","C\u1ea3 hai \u0111\u01b0\u1eddng th\u1eb3ng a và c"],"correct":"4","level":"3","hint":"Quan sát hình v\u1ebd và ch\u1ecdn ra các \u0111\u01b0\u1eddng th\u1eb3ng là tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình \u0111ó.<\/p>N\u1ebfu d là m\u1ed9t tr\u1ee5c \u0111\u1ed1i x\u1ee9ng thì nó chia hình thành hai ph\u1ea7n mà n\u1ebfu "g\u1ea5p" hình theo \u0111\u01b0\u1eddng th\u1eb3ng d thì hai ph\u1ea7n \u0111ó "ch\u1ed3ng khít" lên nhau.<\/p>","answer":"Quan sát hình v\u1ebd, ta th\u1ea5y hai \u0111\u01b0\u1eddng th\u1eb3ng a và c là tr\u1ee5c \u0111\u1ed1i x\u1ee9ng c\u1ee7a hình.<\/p>V\u1eady \u0111áp án \u0111úng là C\u1ea3 hai \u0111\u01b0\u1eddng th\u1eb3ng a và c<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"132","test":"3","date":"2021-09-02 03:08:07","option_type":"txt","len":2}]}