{"common":{"save":0,"post_id":"846","level":1,"total":20,"point":5,"point_extra":0},"segment":[{"id":"2231","post_id":"846","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":" <center><img src='img\/2.jpg' \/><\/center>Cho hai n\u1eeda m\u1eb7t ph\u1eb3ng c\u00f3 chung b\u1edd a. H\u00e3y ch\u1ecdn c\u00e2u \u0111\u00fang:","select":["A. Kh\u00f4ng c\u00f3 \u0111i\u1ec3m n\u00e0o \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng","B. C\u00f3 v\u00f4 s\u1ed1 \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng","C. C\u00f3 hai \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng","D. C\u00f3 m\u1ed9t \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>Hai n\u1eeda m\u1eb7t ph\u1eb3ng c\u00f3 chung b\u1edd a, c\u00f3 v\u00f4 s\u1ed1 \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>B. C\u00f3 v\u00f4 s\u1ed1 \u0111i\u1ec3m \u0111\u1ed3ng th\u1eddi thu\u1ed9c hai n\u1eeda m\u1eb7t ph\u1eb3ng<\/span><\/span> <br\/>","column":1}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:59"},{"id":"2232","post_id":"846","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":" <center><img src='img\/H626_D101.png' \/><\/center>Cho h\u00ecnh v\u1ebd c\u00f3 s\u1ed1 \u0111o nh\u01b0 tr\u00ean. T\u00ednh $\\widehat{yOz}$ . ","select":["A. $\\widehat{yOz}$ = $50^o$","B. $\\widehat{yOz}$ = $60^o$","C. $\\widehat{yOz}$ = $70^o$","D. $\\widehat{yOz}$ = $80^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> + So s\u00e1nh $\\widehat{xOy}$ v\u00e0 $\\widehat{xOz}$ \u0111\u1ec3 t\u00ecm ra tia n\u1eb1m gi\u1eefa<br\/>+ D\u1ef1a v\u00e0o \u0111\u1eb3ng th\u1ee9c c\u1ed9ng g\u00f3c \u0111\u1ec3 t\u00ednh $\\widehat{yOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='img\/H626_D101.png' \/><\/center>Ta c\u00f3: $\\widehat{xOy}$ < $\\widehat{xOz}$ (v\u00ec $30^o$ < $100^o$)<br\/>N\u00ean tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>Suy ra $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOz}$ = $100^o$, $\\widehat{xOy}$ = $30^o$, ta \u0111\u01b0\u1ee3c:<br\/> $30^o$ + $\\widehat{yOz}$ = $100^o$<br\/>Suy ra $\\widehat{yOz}$ = $100^o$ - $30^o$ = $70^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>C. $\\widehat{yOz}$ = $70^o$<\/span><\/span> <br\/><\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:59"},{"id":"2233","post_id":"846","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":5,"ques":" Bi\u1ebft $\\widehat{xOy}$ , $\\widehat{yOz}$ l\u00e0 hai g\u00f3c b\u00f9 nhau v\u00e0 $\\widehat{yOz}$ = $20^o$. T\u00ednh $\\widehat{xOy}$ ","select":["A. $\\widehat{xOy}$ = $70^o$","B. $\\widehat{xOy}$ = $20^o$","C. $\\widehat{xOy}$ = $150^o$","D. $\\widehat{xOy}$ = $160^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3: $\\widehat{xOy}$ , $\\widehat{yOz}$ l\u00e0 hai g\u00f3c b\u00f9 nhau<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $180^o$<br\/>Thay $\\widehat{yOz}$ = $20^o$, ta \u0111\u01b0\u1ee3c:<br\/>$\\widehat{xOy}$ + $20^o$ = $180^o$<br\/>Suy ra $\\widehat{xOy}$ = $180^o$ - $20^o$ = $160^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D. $\\widehat{xOy}$ = $160^o$<\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span> Hai g\u00f3c b\u00f9 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $180^o$<\/span>","column":2}]}]},"correct":"","level":"1","hint":"","answer":"","type":"json","extra_type":"","time":"0","user_id":"0","test":"0","date":"2019-09-30 09:14:59"}]}