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":[[2]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv3/img\/H623_K101.png' \/><\/center> Cho h\u00ecnh v\u1ebd c\u00f3 s\u1ed1 \u0111o nh\u01b0 tr\u00ean. T\u00ednh $\\widehat{yOz}$. ","select":["A. $\\widehat{yOz}$ = $20^o$","B. $\\widehat{yOz}$ = $30^o$","C. $\\widehat{yOz}$ = $100^o$","D. $\\widehat{yOz}$ = $110^o$"],"hint":"","explain":" <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/lv3/img\/H623_K101.png' \/><\/center>Ta c\u00f3: $\\widehat{xOy}$ < $\\widehat{xOz}$ ( v\u00ec $45^o$ < $75^o$)<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 $\\widehat{xOy}$ = $45^o$, $\\widehat{xOz}$ = $75^o$, ta \u0111\u01b0\u1ee3c:<br\/> $45^o$ + $\\widehat{yOz}$ = $75^o$ <br\/>Suy ra $\\widehat{yOz}$ = $75^o$ - $45^o$ = $30^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>B. <\/span>$\\widehat{yOz}$ = $30^o$<\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span> $\\widehat{xOy}$ = $m^o$, $\\widehat{xOz}$ = $n^o$. N\u1ebfu $m^o$ < $n^o$ th\u00ec tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<\/span>","column":2}]}],"id_ques":2161},{"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":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv3/img\/H623_K103.png' \/><\/center> Cho h\u00ecnh v\u1ebd c\u00f3 s\u1ed1 \u0111o nh\u01b0 tr\u00ean. T\u00ednh $\\widehat{yOz}$. ","select":["A. $\\widehat{yOz}$ = $20^o$","B. $\\widehat{yOz}$ = $30^o$","C. $\\widehat{yOz}$ = $40^o$","D. $\\widehat{yOz}$ = $50^o$"],"hint":"","explain":" <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/lv3/img\/H623_K103.png' \/><\/center>Ta c\u00f3: $\\widehat{xOy}$ < $\\widehat{xOz}$ ( v\u00ec $50^o$ < $100^o$)<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 $\\widehat{xOy}$ = $50^o$, $\\widehat{xOz}$ = $100^o$, ta \u0111\u01b0\u1ee3c:<br\/> $50^o$ + $\\widehat{yOz}$ = $100^o$ <br\/>Suy ra $\\widehat{yOz}$ = $100^o$ - $50^o$ = $50^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>D. <\/span>$\\widehat{yOz}$ = $50^o$<\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span> $\\widehat{xOy}$ = $m^o$, $\\widehat{xOz}$ = $n^o$. N\u1ebfu $m^o$ < $n^o$ th\u00ec tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<\/span>","column":2}]}],"id_ques":2162},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv3/img\/H623_K105.png' \/><\/center> Cho h\u00ecnh v\u1ebd c\u00f3 s\u1ed1 \u0111o nh\u01b0 tr\u00ean. T\u00ednh $\\widehat{xOy}$. ","select":["A. $\\widehat{xOy}$ = $40^o$","B. $\\widehat{xOy}$ = $50^o$","C. $\\widehat{xOy}$ = $60^o$","D. $\\widehat{xOy}$ = $70^o$"],"hint":"","explain":" <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/lv3/img\/H623_K105.png' \/><\/center>Ta c\u00f3: $\\widehat{zOy}$ < $\\widehat{zOx}$ ( v\u00ec $50^o$ < $110^o$)<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 $\\widehat{yOz}$ = $50^o$, $\\widehat{xOz}$ = $110^o$, ta \u0111\u01b0\u1ee3c:<br\/> $\\widehat{xOy}$ + $50^o$= $110^o$ <br\/>Suy ra $\\widehat{xOy}$ = $110^o$ - $50^o$ = $60^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>C. <\/span>$\\widehat{yOz}$ = $60^o$<\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span> $\\widehat{xOy}$ = $m^o$, $\\widehat{xOz}$ = $n^o$. N\u1ebfu $m^o$ < $n^o$ th\u00ec tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<\/span>","column":2}]}],"id_ques":2163},{"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":" Bi\u1ebft $\\widehat{xOy}$ = $70^o$, $\\widehat{aOb}$ = $20^o$. 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\/>$\\widehat{xOy}$ + $\\widehat{aOb}$ = $70^o$ + $20^o$ = $90^o$<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":2164},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":" Bi\u1ebft $\\widehat{xOy}$ = $115^o$, $\\widehat{aOb}$ = $65^o$. 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\/>$\\widehat{xOy}$ + $\\widehat{aOb}$ = $115^o$ + $65^o$ = $180^o$<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":2165},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"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\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv3/img\/H623_K106.png' \/><\/center><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":2166},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" Bi\u1ebft $\\widehat{xOy}$ , $\\widehat{yOz}$ l\u00e0 hai g\u00f3c ph\u1ee5 nhau v\u00e0 $\\widehat{yOz}$ = $35^o$. T\u00ednh $\\widehat{xOy}$ ","select":["A. $\\widehat{xOy}$ = $90^o$","B. $\\widehat{xOy}$ = $55^o$","C. $\\widehat{xOy}$ = $45^o$","D. $\\widehat{xOy}$ = $145^o$"],"hint":"","explain":" <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/lv3/img\/H623_K108.png' \/><\/center><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 $\\widehat{yOz}$ = $35^o$, ta \u0111\u01b0\u1ee3c:<br\/>$\\widehat{xOy}$ + $35^o$ = $90^o$<br\/>Suy ra $\\widehat{xOy}$ = $90^o$ - $35^o$ = $55^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. $\\widehat{xOy}$ = $55^o$<\/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":2167},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv3/img\/H623_K110.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. $\\widehat{xOz}$ = $90^o$","B. $\\widehat{xOz}$ = $85^o$","C. $\\widehat{xOz}$ = $75^o$","D. $\\widehat{xOz}$ = $95^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec: $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><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/lv3/img\/H623_K110.png' \/><\/center>Ta c\u00f3: Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/> N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOy}$ = $50^o$, $\\widehat{yOz}$ = $35^o$, ta \u0111\u01b0\u1ee3c:<br\/> $\\widehat{xOz}$ = $50^o$ + $35^o$ = $85^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: B. $\\widehat{xOz}$ = $85^o$<\/span> <br\/><\/span>","column":2}]}],"id_ques":2168},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":" <center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai12/lv3/img\/H623_K111.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. $\\widehat{xOz}$ = $85^o$","C. $\\widehat{xOz}$ = $75^o$","D. $\\widehat{xOz}$ = $80^o$"],"hint":"","explain":" <span class='basic_left'><span class='basic_green'>H\u01b0\u1edbng d\u1eabn:<\/span><br\/>Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz th\u00ec: $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<\/span> <br\/><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/lv3/img\/H623_K111.png' \/><\/center>Ta c\u00f3: Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/> N\u00ean $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$<br\/>Thay $\\widehat{xOy}$ = $25^o$, $\\widehat{yOz}$ = $45^o$, ta \u0111\u01b0\u1ee3c:<br\/> $\\widehat{xOz}$ = $25^o$ + $45^o$ = $70^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: A. $\\widehat{xOz}$ = $70^o$<\/span> <br\/><\/span>","column":2}]}],"id_ques":2169},{"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":" Bi\u1ebft $\\widehat{xOy}$ , $\\widehat{yOz}$ l\u00e0 hai g\u00f3c ph\u1ee5 nhau v\u00e0 $\\widehat{yOz}$ = $45^o$. T\u00ednh $\\widehat{xOy}$ ","select":["A. $\\widehat{xOy}$ = $145^o$","B. $\\widehat{xOy}$ = $135^o$","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 $\\widehat{yOz}$ = $45^o$, ta \u0111\u01b0\u1ee3c:<br\/>$\\widehat{xOy}$ + $45^o$ = $90^o$<br\/>Suy ra $\\widehat{xOy}$ = $90^o$ - $45^o$ = $45^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: D. $\\widehat{xOy}$ = $45^o$<\/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":2170}],"lesson":{"save":0,"level":3}}