Khi nào thì góc xOy + góc yOz = góc xOz. Vẽ góc cho biết số đo
{"segment":[{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/2.jpg' \/><\/center> Hai g\u00f3c ph\u1ee5 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $90^o$. \u0110\u00fang hay sai?","select":["A. \u0110\u00fang","B. Sai"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>Hai g\u00f3c ph\u1ee5 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $90^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>A. \u0110\u00fang<\/span><\/span> <br\/>","column":2}]}],"id_ques":2141},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/2.jpg' \/><\/center> Hai g\u00f3c b\u00f9 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $180^o$. \u0110\u00fang hay sai?","select":["A. \u0110\u00fang","B. Sai"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>Hai g\u00f3c b\u00f9 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $180^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>A. \u0110\u00fang<\/span><\/span> <br\/>","column":2}]}],"id_ques":2142},{"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":" Hai g\u00f3c k\u1ec1 b\u00f9 l\u00e0 hai g\u00f3c:","select":["A. C\u00f3 t\u1ed5ng s\u1ed1 \u0111o l\u00e0 $180^o$","B. C\u00f3 chung m\u1ed9t tia v\u00e0 c\u00f3 t\u1ed5ng s\u1ed1 \u0111o l\u00e0 $180^o$","C. K\u1ec1 nhau v\u00e0 c\u00f3 t\u1ed5ng s\u1ed1 \u0111o l\u00e0 $180^o$","D. C\u00f3 m\u1ed9t c\u1ea1nh chung v\u00e0 c\u00f3 t\u1ed5ng s\u1ed1 \u0111o l\u00e0 $180^o$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>Hai g\u00f3c k\u1ec1 b\u00f9 l\u00e0 hai g\u00f3c v\u1eeba k\u1ec1 nhau v\u00e0 v\u1eeba b\u00f9 nhau<br\/>T\u1ee9c l\u00e0: Hai g\u00f3c k\u1ec1 b\u00f9 l\u00e0 hai k\u1ec1 nhau v\u00e0 c\u00f3 t\u1ed5ng s\u1ed1 \u0111o l\u00e0 $180^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>C. K\u1ec1 nhau v\u00e0 c\u00f3 t\u1ed5ng s\u1ed1 \u0111o l\u00e0 $180^o$<\/span><\/span> <br\/>","column":2}]}],"id_ques":2143},{"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":" H\u00e3y ch\u1ecdn c\u00e2u \u0111\u00fang","select":["A. Tia Ox n\u1eb1m gi\u1eefa hai tia Oy v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{zOy}$ = $\\widehat{xOz}$ ","B. Tia Ox n\u1eb1m gi\u1eefa hai tia Oy v\u00e0 Oz th\u00ec $\\widehat{yOx}$ + $\\widehat{xOz}$ = $\\widehat{yOz}$","C. Tia Ox n\u1eb1m gi\u1eefa hai tia Oy v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$","D. Tia Ox n\u1eb1m gi\u1eefa hai tia Oy v\u00e0 Oz th\u00ec $\\widehat{xOz}$ + $\\widehat{zOy}$ = $\\widehat{xOy}$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>Tia Ox n\u1eb1m gi\u1eefa hai tia Oy v\u00e0 Oz th\u00ec $\\widehat{yOx}$ + $\\widehat{xOz}$ = $\\widehat{yOz}$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n: <span class='basic_pink'>B. Tia Ox n\u1eb1m gi\u1eefa hai tia Oy v\u00e0 Oz th\u00ec $\\widehat{yOx}$ + $\\widehat{xOz}$ = $\\widehat{yOz}$<\/span><\/span> <br\/>","column":1}]}],"id_ques":2144},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D101.png' \/><\/center> Cho h\u00ecnh v\u1ebd nh\u01b0 tr\u00ean. G\u00f3c k\u1ec1 b\u00f9 v\u1edbi g\u00f3c xOy l\u00e0:","select":["A. g\u00f3c yOz","B. g\u00f3c yOx","C. g\u00f3c xOz","D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n tr\u00ean \u0111\u1ec1u sai"],"hint":"","explain":" <span class='basic_left'><span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Hai g\u00f3c k\u1ec1 b\u00f9 l\u00e0 hai g\u00f3c v\u1eeba k\u1ec1 nhau v\u00e0 v\u1eeba b\u00f9 nhau<br\/>T\u1ee9c l\u00e0: Hai g\u00f3c k\u1ec1 b\u00f9 l\u00e0 hai k\u1ec1 nhau v\u00e0 c\u00f3 t\u1ed5ng s\u1ed1 \u0111o l\u00e0 $180^o$<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>G\u00f3c xOy v\u00e0 g\u00f3c yOz c\u00f3 c\u1ea1nh chung l\u00e0 Oy v\u00e0 c\u1ea1nh Ox v\u00e0 Oz n\u1eb1m tr\u00ean hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau b\u1edd Oy<br\/>N\u00ean <b>g\u00f3c xOy v\u00e0 g\u00f3c yOz l\u00e0 hai g\u00f3c k\u1ec1 nhau<\/b><br\/>Tia Ox v\u00e0 tia Oz l\u00e0 hai tia \u0111\u1ed1i nhau<br\/>Suy ra $\\widehat{xOz}$ = $180^o$<br\/>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz n\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Hay $\\widehat{xOy}$ + $\\widehat{yOz}$ = $180^o$<br\/>Suy ra <b>g\u00f3c xOy v\u00e0 g\u00f3c yOz b\u00f9 nhau<\/b><br\/>V\u1eady g\u00f3c k\u1ec1 b\u00f9 v\u1edbi g\u00f3c xOy l\u00e0 g\u00f3c yOz<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>A. g\u00f3c yOz<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2145},{"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='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D102.png' \/><\/center> Cho h\u00ecnh v\u1ebd nh\u01b0 tr\u00ean, g\u00f3c k\u1ec1 v\u1edbi g\u00f3c yOz l\u00e0:","select":["A. g\u00f3c xOz","B. g\u00f3c yOz","C. g\u00f3c xOy","D. g\u00f3c zOy"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Hai g\u00f3c k\u1ec1 nhau l\u00e0 hai g\u00f3c c\u00f3 m\u1ed9t c\u1ea1nh chung v\u00e0 hai c\u1ea1nh c\u00f2n l\u1ea1i n\u1eb1m tr\u00ean hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau c\u00f3 b\u1edd ch\u1ee9a c\u1ea1nh chung<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>G\u00f3c xOy v\u00e0 g\u00f3c yOz c\u00f3 c\u1ea1nh chung l\u00e0 Oy v\u00e0 hai c\u1ea1nh Ox v\u00e0 Oz n\u1eb1m tr\u00ean hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau b\u1edd Oy<br\/>N\u00ean hai g\u00f3c xOy v\u00e0 g\u00f3c yOz l\u00e0 hai g\u00f3c k\u1ec1 nhau<br\/>Ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>C. g\u00f3c xOy<\/span><\/span> <br\/>","column":2}]}],"id_ques":2146},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D104.png' \/><\/center> Cho h\u00ecnh v\u1ebd nh\u01b0 tr\u00ean, g\u00f3c k\u1ec1 v\u1edbi g\u00f3c KON l\u00e0:","select":["A. g\u00f3c MON","B. g\u00f3c NOK","C. g\u00f3c MOK","D. g\u00f3c KOM"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Hai g\u00f3c k\u1ec1 nhau l\u00e0 hai g\u00f3c c\u00f3 m\u1ed9t c\u1ea1nh chung v\u00e0 hai c\u1ea1nh c\u00f2n l\u1ea1i n\u1eb1m tr\u00ean hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau c\u00f3 b\u1edd ch\u1ee9a c\u1ea1nh chung<\/span> <br\/><br\/><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3:<br\/>G\u00f3c KON v\u00e0 g\u00f3c MON c\u00f3 c\u1ea1nh chung l\u00e0 ON v\u00e0 hai c\u1ea1nh OK v\u00e0 OM n\u1eb1m tr\u00ean hai n\u1eeda m\u1eb7t ph\u1eb3ng \u0111\u1ed1i nhau b\u1edd ON<br\/>N\u00ean hai g\u00f3c KON v\u00e0 g\u00f3c MON l\u00e0 hai g\u00f3c k\u1ec1 nhau<br\/>Ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. g\u00f3c MON<\/span><\/span> <br\/>","column":2}]}],"id_ques":2147},{"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 $\\widehat{xOz}$ = $150^o$, $\\widehat{xOy}$ = $120^o$. Bi\u1ebft tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. T\u00ednh $\\widehat{yOz}$. ","select":["A. $30^o$","B. $40^o$","C. $50^o$","D. $60^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D105.png' \/><\/center>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOz}$ = $150^o$, $\\widehat{xOy}$ = $120^o$, ta \u0111\u01b0\u1ee3c:<br\/>$120^o$ + $\\widehat{yOz}$ = $150^o$<br\/>Suy ra $\\widehat{yOz}$ = $150^o$ - $120^o$ = $30^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. $30^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2148},{"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":" Cho $\\widehat{xOz}$ = $100^o$, $\\widehat{yOz}$ = $50^o$. Bi\u1ebft tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. T\u00ednh $\\widehat{xOy}$. ","select":["A. $30^o$","B. $40^o$","C. $50^o$","D. $60^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D106.png' \/><\/center>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOz}$ = $100^o$, $\\widehat{yOz}$ = $50^o$, ta \u0111\u01b0\u1ee3c:<br\/> $\\widehat{xOy}$ + $50^o$ = $100^o$<br\/>Suy ra $\\widehat{xOy}$ = $100^o$ - $50^o$ = $50^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>C. $50^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2149},{"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 $\\widehat{xOy}$ = $60^o$, $\\widehat{aOb}$ = $30^o$. V\u1eady hai g\u00f3c xOy v\u00e0 aOb l\u00e0 hai g\u00f3c: ","select":["A. b\u00f9 nhau","B. k\u1ec1 nhau","C. k\u1ec1 b\u00f9","D. ph\u1ee5 nhau"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3: <br\/>$\\widehat{xOy}$ + $\\widehat{aOb}$ = $60^o$ + $30^o$ = $90^o$<br\/>Suy ra hai g\u00f3c xOy v\u00e0 aOb l\u00e0 hai g\u00f3c ph\u1ee5 nhau<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>D. ph\u1ee5 nhau<\/span><\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span> Hai g\u00f3c ph\u1ee5 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $90^o$<\/span>","column":2}]}],"id_ques":2150},{"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":" Bi\u1ebft $\\widehat{xOy}$ = $150^o$, $\\widehat{aOb}$ = $30^o$. V\u1eady hai g\u00f3c xOy v\u00e0 aOb l\u00e0 hai g\u00f3c: ","select":["A. b\u00f9 nhau","B. k\u1ec1 nhau","C. k\u1ec1 b\u00f9","D. ph\u1ee5 nhau"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Ta c\u00f3: <br\/>$\\widehat{xOy}$ + $\\widehat{aOb}$ = $150^o$ + $30^o$ = $180^o$<br\/>Suy ra hai g\u00f3c xOy v\u00e0 aOb l\u00e0 hai g\u00f3c b\u00f9 nhau<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. b\u00f9 nhau<\/span><\/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}]}],"id_ques":2151},{"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":" Bi\u1ebft $\\widehat{xOy}$ , $\\widehat{yOz}$ l\u00e0 hai g\u00f3c b\u00f9 nhau v\u00e0 $\\widehat{yOz}$ = $70^o$. T\u00ednh $\\widehat{xOy}$ ","select":["A. $\\widehat{xOy}$ = $70^o$","B. $\\widehat{xOy}$ = $20^o$","C. $\\widehat{xOy}$ = $110^o$","D. $\\widehat{xOy}$ = $100^o$"],"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 $\\widehat{yOz}$ = $70^o$, ta \u0111\u01b0\u1ee3c:<br\/>$\\widehat{xOy}$ + $70^o$ = $180^o$<br\/>Suy ra $\\widehat{xOy}$ = $180^o$ - $70^o$ = $110^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. $\\widehat{xOy}$ = $110^o$<\/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}]}],"id_ques":2152},{"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":" Bi\u1ebft $\\widehat{xOy}$ , $\\widehat{yOz}$ l\u00e0 hai g\u00f3c ph\u1ee5 nhau v\u00e0 $\\widehat{yOz}$ = $40^o$. T\u00ednh $\\widehat{xOy}$ ","select":["A. $\\widehat{xOy}$ = $90^o$","B. $\\widehat{xOy}$ = $50^o$","C. $\\widehat{xOy}$ = $140^o$","D. $\\widehat{xOy}$ = $150^o$"],"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 ph\u1ee5 nhau<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $90^o$<br\/>Thay $\\widehat{yOz}$ = $40^o$, ta \u0111\u01b0\u1ee3c:<br\/>$\\widehat{xOy}$ + $40^o$ = $90^o$<br\/>Suy ra $\\widehat{xOy}$ = $90^o$ - $40^o$ = $50^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. $\\widehat{xOy}$ = $50^o$<\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span> Hai g\u00f3c ph\u1ee5 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $90^o$<\/span>","column":2}]}],"id_ques":2153},{"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 $\\widehat{xOy}$ = $120^o$. T\u00ednh $\\widehat{yOz}$ ","select":["A. $\\widehat{yOz}$ = $120^o$","B. $\\widehat{yOz}$ = $130^o$","C. $\\widehat{yOz}$ = $50^o$","D. $\\widehat{yOz}$ = $60^o$"],"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 $\\widehat{xOy}$ = $120^o$, ta \u0111\u01b0\u1ee3c:<br\/> $120^o$ + $\\widehat{yOz}$ = $180^o$<br\/>Suy ra $\\widehat{yOz}$ = $180^o$ - $120^o$ = $60^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>D. $\\widehat{yOz}$ = $60^o$<\/span><\/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}]}],"id_ques":2154},{"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":" Bi\u1ebft $\\widehat{xOy}$ , $\\widehat{yOz}$ l\u00e0 hai g\u00f3c ph\u1ee5 nhau v\u00e0 $\\widehat{yOz}$ = $55^o$. T\u00ednh $\\widehat{xOy}$ ","select":["A. $\\widehat{xOy}$ = $135^o$","B. $\\widehat{xOy}$ = $125^o$","C. $\\widehat{xOy}$ = $35^o$","D. $\\widehat{xOy}$ = $45^o$"],"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 ph\u1ee5 nhau<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $90^o$<br\/>Thay $\\widehat{yOz}$ = $55^o$, ta \u0111\u01b0\u1ee3c:<br\/>$\\widehat{xOy}$ + $55^o$ = $90^o$<br\/>Suy ra $\\widehat{xOy}$ = $90^o$ - $55^o$ = $35^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. $\\widehat{xOy}$ = $35^o$<\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span> Hai g\u00f3c ph\u1ee5 nhau l\u00e0 hai g\u00f3c c\u00f3 t\u1ed5ng s\u1ed1 \u0111o b\u1eb1ng $90^o$<\/span>","column":2}]}],"id_ques":2155},{"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":" Cho $\\widehat{xOz}$ = $120^o$, $\\widehat{xOy}$ = $70^o$. Bi\u1ebft tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. T\u00ednh $\\widehat{yOz}$. ","select":["A. $\\widehat{yOz}$ = $30^o$","B. $\\widehat{yOz}$ = $40^o$","C. $\\widehat{yOz}$ = $50^o$","D. $\\widehat{yOz}$ = $60^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D107.png' \/><\/center>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOz}$ = $120^o$, $\\widehat{xOy}$ = $70^o$, ta \u0111\u01b0\u1ee3c:<br\/> $70^o$ + $\\widehat{yOz}$ = $120^o$<br\/>Suy ra $\\widehat{yOz}$ = $120^o$ - $70^o$ = $50^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>C. $\\widehat{yOz}$ = $50^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2156},{"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 $\\widehat{xOz}$ = $150^o$, $\\widehat{xOy}$ = $80^o$. Bi\u1ebft tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. T\u00ednh $\\widehat{yOz}$. ","select":["A. $\\widehat{yOz}$ = $70^o$","B. $\\widehat{yOz}$ = $80^o$","C. $\\widehat{yOz}$ = $50^o$","D. $\\widehat{yOz}$ = $60^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D109.png' \/><\/center>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOz}$ = $150^o$, $\\widehat{xOy}$ = $80^o$, ta \u0111\u01b0\u1ee3c:<br\/> $80^o$ + $\\widehat{yOz}$ = $150^o$<br\/>Suy ra $\\widehat{yOz}$ = $150^o$ - $80^o$ = $70^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. $\\widehat{yOz}$ = $70^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2157},{"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 $\\widehat{xOz}$ = $95^o$, $\\widehat{yOz}$ = $45^o$. Bi\u1ebft tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. T\u00ednh $\\widehat{xOy}$. ","select":["A. $\\widehat{xOy}$ = $50^o$","B. $\\widehat{xOy}$ = $55^o$","C. $\\widehat{xOy}$ = $60^o$","D. $\\widehat{xOy}$ = $65^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D111.png' \/><\/center>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOz}$ = $95^o$, $\\widehat{yOz}$ = $45^o$, ta \u0111\u01b0\u1ee3c:<br\/> $\\widehat{xOy}$ + $45^o$ = $95^o$<br\/>Suy ra $\\widehat{xOy}$ = $95^o$ - $45^o$ = $50^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>A. $\\widehat{xOy}$ = $50^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2158},{"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='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D112.png' \/><\/center> Cho h\u00ecnh v\u1ebd c\u00f3 s\u1ed1 \u0111o nh\u01b0 tr\u00ean. Bi\u1ebft tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. T\u00ednh $\\widehat{xOz}$. ","select":["A. $\\widehat{xOz}$ = $70^o$","B. $\\widehat{xOz}$ = $80^o$","C. $\\widehat{xOz}$ = $90^o$","D. $\\widehat{xOz}$ = $100^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D112.png' \/><\/center>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOy}$ = $35^o$, $\\widehat{yOz}$ = $45^o$, ta \u0111\u01b0\u1ee3c:<br\/> $\\widehat{xOz}$ = $35^o$ + $45^o$ = $80^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>B. $\\widehat{xOz}$ = $80^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2159},{"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='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D114.png' \/><\/center> Cho h\u00ecnh v\u1ebd c\u00f3 s\u1ed1 \u0111o nh\u01b0 tr\u00ean. Bi\u1ebft tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz. T\u00ednh $\\widehat{xOz}$. ","select":["A. $\\widehat{xOz}$ = $70^o$","B. $\\widehat{xOz}$ = $75^o$","C. $\\widehat{xOz}$ = $80^o$","D. $\\widehat{xOz}$ = $85^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/> N\u1ebfu tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><span class='basic_left'><span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv1/img\/H623_D114.png' \/><\/center>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOy}$ = $38^o$, $\\widehat{yOz}$ = $37^o$, ta \u0111\u01b0\u1ee3c:<br\/> $\\widehat{xOz}$ = $38^o$ + $37^o$ = $75^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>B. $\\widehat{xOz}$ = $75^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2160}],"lesson":{"save":0,"level":1}}