{"common":{"save":0,"post_id":"1017","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"1501","post_id":"1017","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":[[4]],"list":[{"point":10,"ques":" Kh\u1eb3ng \u0111\u1ecbnh n\u00e0o sau \u0111\u00e2y l\u00e0 sai: ","select":["A. Hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng vu\u00f4ng g\u00f3c v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba th\u00ec ch\u00fang song song v\u1edbi nhau. ","B. Cho hai \u0111\u01b0\u1eddng th\u1eb3ng a v\u00e0 b song song v\u1edbi nhau, n\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng c c\u1eaft a th\u00ec \u0111\u01b0\u1eddng th\u1eb3ng c c\u0169ng c\u1eaft b. ","C. N\u1ebfu hai \u0111\u01b0\u1eddng th\u1eb3ng ph\u00e2n bi\u1ec7t c\u00f9ng song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng th\u1ee9 ba th\u00ec ch\u00fang song song v\u1edbi nhau. ","D. C\u00f3 duy nh\u1ea5t m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc. "],"hint":"","explain":" <span class='basic_pink'>Kh\u1eb3ng \u0111\u1ecbnh sai l\u00e0 D. V\u00ec: <br\/> C\u00f3 v\u00f4 s\u1ed1 \u0111\u01b0\u1eddng th\u1eb3ng song song v\u1edbi m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng cho tr\u01b0\u1edbc. <\/span> ","column":1}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:23:00"},{"id":"1502","post_id":"1017","mon_id":"0","chapter_id":"0","question":"L\u1ef1a ch\u1ecdn \u0111\u00fang hay sai","options":{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00fang hay sai","title_trans":"","temp":"true_false","correct":[["f","t","t","f"]],"list":[{"point":10,"image":"","col_name":["","\u0110\u00fang","Sai"],"arr_ques":["N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng a vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng b, \u0111\u01b0\u1eddng th\u1eb3ng b l\u1ea1i vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c th\u00ec \u0111\u01b0\u1eddng th\u1eb3ng a vu\u00f4ng g\u00f3c v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c. ","N\u1ebfu \u0111\u01b0\u1eddng th\u1eb3ng a song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng b, \u0111\u01b0\u1eddng th\u1eb3ng b l\u1ea1i song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c th\u00ec \u0111\u01b0\u1eddng th\u1eb3ng a song song v\u1edbi \u0111\u01b0\u1eddng th\u1eb3ng c ","N\u1ebfu $a \\perp c$ v\u00e0 $b \\perp c$ th\u00ec a \/\/ b ","N\u1ebfu a \/\/ b v\u00e0 $c \\perp b$ th\u00ec c \/\/ a"],"hint":"V\u1ebd h\u00ecnh \u0111\u1ec3 t\u00ecm \u0111\u00e1p \u00e1n","explain":["Sai. <center><img src='img\/H7C16-05.png' \/><\/center> ","<br\/> \u0110\u00fang","<br\/> \u0110\u00fang","<br\/> Sai <center><img src='img\/H7C16-06.png' \/><\/center> "]}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:23:00"},{"id":"1503","post_id":"1017","mon_id":"0","chapter_id":"0","question":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","options":{"time":24,"part":[{"title":"\u0110i\u1ec1n t\u1eeb th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"\u0110\u00e2y l\u00e0 g\u00f3i Combo 2 c\u00e2u. ","temp":"fill_the_blank","correct":[[["30"]]],"list":[{"point":10,"width":40,"content":"","type_input":"","ques":" <span class='basic_left'> Cho tam gi\u00e1c ABC c\u00f3 $\\widehat{A} = 90^{o} $. K\u1ebb $ AH \\perp BC (H \\in BC)$. K\u1ebb $ HE \\perp AC (E \\in AC)$. <br\/> Cho bi\u1ebft $\\widehat{B} = 60^{o} $ <br\/> <u>C\u00e2u 1: <\/u> S\u1ed1 \u0111o g\u00f3c $ \\widehat{AHE} $ l\u00e0: $\\FormInput[40][bl_elm_true basic_elm basic_blank basic_blank_part]{}^{o}$<\/span>","hint":"","explain":" <center><img src='img\/H7C16-29.png' \/><\/center> <span class='basic_left'> Ta c\u00f3 $ AB \\perp AC, HE \\perp AC $ n\u00ean AB \/\/ HE (quan h\u1ec7 gi\u1eefa t\u00ednh vu\u00f4ng g\u00f3c v\u1edbi t\u00ednh song song) <br\/> AB \/\/ HE suy ra $\\widehat{ABH} = \\widehat{EHC} = 60^{o} $ (hai g\u00f3c \u0111\u1ed3ng v\u1ecb) <br\/> C\u00f3 $\\widehat{AHC} = \\widehat{AHE} + \\widehat{EHC} $<br\/> $ \\Rightarrow \\widehat{AHE} $$= \\widehat{AHC} - \\widehat{EHC} \\\\ = 90^{o} - 60^{o} \\\\ = 30^{o} $ <\/span> <br\/> <br\/> <span class='basic_pink'> V\u1eady $ \\widehat{AHE} = 30^{o}$<\/span> "}]}]},"correct":"","level":"3","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:23:00"}]}