{"common":{"save":0,"post_id":"830","level":1,"total":20,"point":5,"point_extra":0},"segment":[{"id":"2011","post_id":"830","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"\u0110i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111i\u1ec3m M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng PQ l\u00e0: ","select":["A. MP = MQ","B. MP + MQ = PQ v\u00e0 MP = MQ","C. MP + MQ = PQ","D. MP = MQ, M n\u1eb1m gi\u1eefa P v\u00e0 B"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> \u0110\u1ec3 \u0111i\u1ec3m M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng PQ th\u00ec M ph\u1ea3i th\u1ecfa m\u00e3n \u0111\u00f4ng th\u1eddi hai \u0111i\u1ec1u ki\u1ec7n sau: <br\/> +) \u0110i\u1ec3m M n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m P v\u00e0 Q t\u1ee9c l\u00e0 MP + MQ = PQ <br\/> +) \u0110i\u1ec3m \u0111\u00f3 chia \u0111o\u1ea1n th\u1eb3ng th\u00e0nh hai ph\u1ea7n b\u1eb1ng nhau t\u1ee9c l\u00e0 MP = MQ <br\/> V\u1eady \u0111i\u1ec1u ki\u1ec7n \u0111\u1ec3 \u0111i\u1ec3m M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng PQ l\u00e0: <br\/> <span class='basic_pink'> B. MP + MQ = PQ v\u00e0 MP = MQ <\/span> ","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:57"},{"id":"2012","post_id":"830","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"\u0110i\u1ec3m I l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng MN khi: ","select":["A. IM + IN = MN","B. IM = IN","C. IM = IN = $\\dfrac{MN}{2}$","D. C\u1ea3 3 \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u sai."],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> \u0110\u1ec3 \u0111i\u1ec3m I l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng MN th\u00ec I ph\u1ea3i th\u1ecfa m\u00e3n \u0111\u1ed3ng th\u1eddi hai \u0111i\u1ec1u ki\u1ec7n sau: <br\/> +) \u0110i\u1ec3m I n\u1eb1m gi\u1eefa hai \u0111i\u1ec3m M v\u00e0 N t\u1ee9c l\u00e0 MI + IN = MN <br\/> +) \u0110i\u1ec3m \u0111\u00f3 chia \u0111o\u1ea1n th\u1eb3ng th\u00e0nh hai ph\u1ea7n b\u1eb1ng nhau t\u1ee9c l\u00e0 MI = IN <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. IM = IN = $\\dfrac{MN}{2}$ <\/span> ","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"87","test":"0","date":"2019-09-30 09:14:57"},{"id":"2013","post_id":"830","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Cho \u0111o\u1ea1n th\u1eb3ng AB = 6cm, \u0111i\u1ec3m M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng AB. T\u00ednh AM = ? ","select":["A. AM = 3cm","B. AM = 2cm","C. AM = 4cm","D. AM = 12cm"],"hint":"V\u00ec M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng AB n\u00ean $AM = MB = \\dfrac{AB}{2}$","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span> <br\/> V\u00ec M l\u00e0 trung \u0111i\u1ec3m c\u1ee7a \u0111o\u1ea1n th\u1eb3ng AB n\u00ean ta c\u00f3: <br\/> AM + MB = AB (1) <br\/> AM = MB (2) <br\/> Thay (2) v\u00e0 (1) ta c\u00f3: <br\/> $\\begin{align*} AM + AM &= AB \\\\ 2AM &= AB \\\\ AM &= \\dfrac{AB}{2} \\\\ AM &= \\dfrac{6}{2} \\\\ AM &= 3 (cm)\\end{align*}$ <br\/> <span class='basic_pink'> V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. AM = 3cm<\/span> ","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:57"}]}