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{"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":" M\u1ed7i g\u00f3c ( tr\u1eeb g\u00f3c b\u1eb9t) ch\u1ec9 c\u00f3 m\u1ed9t tia ph\u00e2n gi\u00e1c. \u0110\u00fang hay sai?","select":["A. \u0110\u00fang","B. Sai"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Theo ph\u1ea7n nh\u1eadn x\u00e9t b\u00e0i tia ph\u00e2n gi\u00e1c ta c\u00f3:<br\/>M\u1ed7i g\u00f3c ( tr\u1eeb g\u00f3c b\u1eb9t) ch\u1ec9 c\u00f3 m\u1ed9t tia ph\u00e2n gi\u00e1c<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>A. \u0110\u00fang<\/span><\/span> <br\/>","column":2}]}],"id_ques":2171},{"time":9,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["25"],["50"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"Cho tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOy. Bi\u1ebft $\\widehat{xOt}$ = $25^o$. V\u1eady $\\widehat{tOy}$ = _input_$^o$, $\\widehat{xOy}$ = _input_$^o$","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D116.png' \/><\/center>Ta c\u00f3: Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$ <br\/>Suy ra $\\widehat{xOt}$ = $\\widehat{tOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$ = $50^o$<br\/>L\u1ea1i c\u00f3: $\\widehat{xOt}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$<br\/>Do \u0111\u00f3: $\\widehat{xOy}$ = 2. $\\widehat{xOt}$ = 2. $25^o$ = $50^o$<br\/>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i l\u00e0: <span class='basic_pink'> 25, 50<\/span><\/span> <br\/> "}]}],"id_ques":2172},{"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":" G\u00f3c t\u00f9 c\u00f3 hai tia ph\u00e2n gi\u00e1c. \u0110\u00fang hay sai?","select":["A. \u0110\u00fang","B. Sai"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Theo ph\u1ea7n nh\u1eadn x\u00e9t b\u00e0i tia ph\u00e2n gi\u00e1c ta c\u00f3:<br\/>M\u1ed7i g\u00f3c ( tr\u1eeb g\u00f3c b\u1eb9t) ch\u1ec9 c\u00f3 m\u1ed9t tia ph\u00e2n gi\u00e1c<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>B. Sai<\/span><\/span> <br\/>","column":2}]}],"id_ques":2173},{"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":" Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{aOb}$ th\u00ec:","select":["A. $\\widehat{aOt}$ = $\\widehat{tOb}$","B. $\\widehat{aOt}$ = $\\dfrac{1}{2}$ $\\widehat{aOb}$","C. Tia Ot n\u1eb1m gi\u1eefa hai tia Oa v\u00e0 Ob","D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n A, B, C \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/>Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{aOb}$ th\u00ec:<br\/>+ $\\widehat{aOt}$ = $\\widehat{tOb}$ = $\\dfrac{1}{2}$ $\\widehat{aOb}$<br\/>+ Tia Ot n\u1eb1m gi\u1eefa hai tia Oa v\u00e0 Ob<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>D. T\u1ea5t c\u1ea3 c\u00e1c \u0111\u00e1p \u00e1n A, B, C \u0111\u1ec1u \u0111\u00fang<\/span><\/span> <br\/>","column":2}]}],"id_ques":2174},{"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 $\\widehat{xOz}$ = $100^o$. Bi\u1ebft tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOz}$. T\u00ednh $\\widehat{xOy}$","select":["A. $50^o$","B. $100^o$","C. $40^o$","D. $60^o$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D101.png' \/><\/center>Tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOz}$ <br\/>Suy ra $\\widehat{xOy}$ = $\\widehat{yOz}$ = $\\dfrac{1}{2}$ $\\widehat{xOz}$ = $\\dfrac{1}{2}$. $100^o$ = $50^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>A. $50^o$<\/span><\/span> <br\/>","column":2}]}],"id_ques":2175},{"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":" Cho $\\widehat{xOy}$ = $110^o$. Bi\u1ebft tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$. T\u00ednh $\\widehat{tOy}$","select":["A. $50^o$","B. $55^o$","C. $45^o$","D. $65^o$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D102.png' \/><\/center>Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$ <br\/>Suy ra $\\widehat{xOt}$ = $\\widehat{tOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$ = $\\dfrac{1}{2}$. $110^o$ = $55^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>B. $55^o$<\/span><\/span> <br\/>","column":2}]}],"id_ques":2176},{"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 $\\widehat{xOy}$ = $150^o$. Bi\u1ebft tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$. T\u00ednh $\\widehat{tOy}$","select":["A. $75^o$","B. $55^o$","C. $45^o$","D. $65^o$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D103.png' \/><\/center>Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$ <br\/>Suy ra $\\widehat{xOt}$ = $\\widehat{tOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$ = $\\dfrac{1}{2}$. $150^o$ = $75^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>A. $75^o$<\/span><\/span> <br\/>","column":2}]}],"id_ques":2177},{"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 $\\widehat{xOy}$ = $80^o$. Bi\u1ebft tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$. T\u00ednh $\\widehat{tOy}$","select":["A. $30^o$","B. $35^o$","C. $40^o$","D. $45^o$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D104.png' \/><\/center>Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$ <br\/>Suy ra $\\widehat{xOt}$ = $\\widehat{tOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$ = $\\dfrac{1}{2}$. $80^o$ = $40^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>C. $40^o$<\/span><\/span> <br\/>","column":2}]}],"id_ques":2178},{"time":9,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["38"],["76"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"Cho tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz. Bi\u1ebft $\\widehat{xOy}$ = $38^o$. V\u1eady $\\widehat{yOz}$ = _input_$^o$, $\\widehat{xOz}$ = _input_$^o$","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D118.png' \/><\/center>Ta c\u00f3: Tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOz}$ <br\/>Suy ra $\\widehat{xOy}$ = $\\widehat{yOz}$ = $\\dfrac{1}{2}$ $\\widehat{xOz}$ = $38^o$<br\/>L\u1ea1i c\u00f3: $\\widehat{xOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOz}$<br\/>Do \u0111\u00f3: $\\widehat{xOz}$ = 2. $\\widehat{xOy}$ = 2. $38^o$ = $76^o$<br\/>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i l\u00e0: <span class='basic_pink'> 38, 76<\/span><\/span> <br\/> "}]}],"id_ques":2179},{"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 $\\widehat{aOb}$ = $140^o$. Bi\u1ebft tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{aOb}$. T\u00ednh $\\widehat{tOb}$","select":["A. $50^o$","B. $60^o$","C. $70^o$","D. $80^o$"],"hint":"","explain":" <span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D109.png' \/><\/center>Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{aOb}$ <br\/>Suy ra $\\widehat{aOt}$ = $\\widehat{tOb}$ = $\\dfrac{1}{2}$ $\\widehat{aOb}$ = $\\dfrac{1}{2}$. $140^o$ = $70^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>C. $70^o$<\/span><\/span> <br\/>","column":2}]}],"id_ques":2180},{"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":" Tia ph\u00e2n gi\u00e1c c\u1ee7a m\u1ed9t g\u00f3c l\u00e0 tia n\u1eb1m gi\u1eefa hai c\u1ea1nh c\u1ee7a g\u00f3c v\u00e0 t\u1ea1o v\u1edbi hai c\u1ea1nh \u1ea5y hai g\u00f3c b\u1eb1ng nhau. \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\/>Tia ph\u00e2n gi\u00e1c c\u1ee7a m\u1ed9t g\u00f3c l\u00e0 tia n\u1eb1m gi\u1eefa hai c\u1ea1nh c\u1ee7a g\u00f3c v\u00e0 t\u1ea1o v\u1edbi hai c\u1ea1nh \u1ea5y hai g\u00f3c b\u1eb1ng nhau<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n : <span class='basic_pink'>A. \u0110\u00fang<\/span><\/span> <br\/>","column":2}]}],"id_ques":2181},{"time":9,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["90"],["90"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"Bi\u1ebft g\u00f3c xOy l\u00e0 g\u00f3c b\u1eb9t v\u00e0 tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOy. V\u1eady $\\widehat{xOt}$ = _input_$^o$, $\\widehat{tOy}$ = _input_$^o$","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D110.png' \/><\/center>Ta c\u00f3: xOy l\u00e0 g\u00f3c b\u1eb9t n\u00ean $\\widehat{xOy}$ = $180^o$<br\/>Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$ <br\/>Suy ra $\\widehat{xOt}$ = $\\widehat{tOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$ = $\\dfrac{1}{2}$. $180^o$ = $90^o$<br\/>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i l\u00e0: <span class='basic_pink'> 90, 90<\/span><\/span> <br\/> "}]}],"id_ques":2182},{"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":" Tr\u00ean c\u00f9ng m\u1ed9t n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd c\u00f3 ch\u1ee9a tia Ox, v\u1ebd hai tia Oy v\u00e0 Oz sao cho $\\widehat{xOy}$ = $50^o$, $\\widehat{xOz}$ = $100^o$. H\u00e3y ch\u1ecdn c\u00e2u sai:","select":["A. Tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz","B. Tia Oz l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz","C. Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz","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/bai13/lv1/img\/H624_D112.png' \/><\/center>Ta c\u00f3: $\\widehat{xOy}$ < $\\widehat{xOz}$ (v\u00ec $50^o$ < $100^o$)<br\/>N\u00ean <b>tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<\/b> (1)<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\/>$\\widehat{yOz}$ = $100^o$ - $50^o$ = $50^o$<br\/>M\u00e0 $\\widehat{xOy}$ = $50^o$ n\u00ean <b>$\\widehat{xOy}$ = $\\widehat{yOz}$<\/b> (2)<br\/>T\u1eeb (1) v\u00e0 (2) suy ra <b>tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz<\/b><br\/>V\u1eady \u0111\u00e1p \u00e1n sai l\u00e0: : <span class='basic_pink'>B. Tia Oz l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz<\/span><\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span><br\/><b>Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz khi:<\/b><br\/>+ Tia Oy l\u00e0 tia n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>+ $\\widehat{xOy}$ = $\\widehat{yOz}$ <\/span>","column":2}]}],"id_ques":2183},{"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":" Tr\u00ean c\u00f9ng m\u1ed9t n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd c\u00f3 ch\u1ee9a tia Ox, v\u1ebd hai tia Oy v\u00e0 Oz sao cho $\\widehat{xOy}$ = $62^o$, $\\widehat{xOz}$ = $124^o$. H\u00e3y ch\u1ecdn c\u00e2u sai:","select":["A. Tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz","B. C. Tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz","C. Tia Ox l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c yOz","D. $\\widehat{yOz}$ = $62^o$"],"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/bai13/lv1/img\/H624_D115.png' \/><\/center>Ta c\u00f3: $\\widehat{xOy}$ < $\\widehat{xOz}$ (v\u00ec $62^o$ < $124^o$)<br\/>N\u00ean <b>tia Oy n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<\/b> (1)<br\/>Suy ra $\\widehat{xOy}$ + $\\widehat{yOz}$ = $\\widehat{xOz}$ <br\/>Thay $\\widehat{xOy}$ = $62^o$, $\\widehat{xOz}$ = $124^o$, ta \u0111\u01b0\u1ee3c:<br\/> $62^o$ + $\\widehat{yOz}$ = $124^o$<br\/>$\\widehat{yOz}$ = $124^o$ - $62^o$ = $62^o$<br\/>M\u00e0 $\\widehat{xOy}$ = $62^o$ n\u00ean <b>$\\widehat{xOy}$ = $\\widehat{yOz}$<\/b> (2)<br\/>T\u1eeb (1) v\u00e0 (2) suy ra <b>tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz<\/b><br\/>V\u1eady \u0111\u00e1p \u00e1n sai l\u00e0: <span class='basic_pink'>C. Tia Ox l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c yOz<\/span><\/span> <br\/><\/span><span class='basic_left'><span class='basic_green'>Nh\u1eadn x\u00e9t:<\/span><br\/><b>Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz khi:<\/b><br\/>+ Tia Oy l\u00e0 tia n\u1eb1m gi\u1eefa hai tia Ox v\u00e0 Oz<br\/>+ $\\widehat{xOy}$ = $\\widehat{yOz}$ <\/span>","column":2}]}],"id_ques":2184},{"time":9,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["35"],["20"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"Cho tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOy v\u00e0 $\\widehat{xOy}$ v\u00e0 $\\widehat{aOb}$ l\u00e0 hai g\u00f3c ph\u1ee5 nhau. Bi\u1ebft $\\widehat{xOt}$ = $35^o$. V\u1eady $\\widehat{tOy}$ = _input_$^o$, $\\widehat{aOb}$ = _input_$^o$","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D117.png' \/><\/center>Ta c\u00f3: Tia Ot l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOy}$ <br\/>Suy ra $\\widehat{xOt}$ = $\\widehat{tOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$ = $35^o$<br\/>L\u1ea1i c\u00f3: $\\widehat{xOt}$ = $\\dfrac{1}{2}$ $\\widehat{xOy}$<br\/>Do \u0111\u00f3: $\\widehat{xOy}$ = 2. $\\widehat{xOt}$ = 2. $35^o$ = $70^o$<br\/>$\\widehat{xOy}$ v\u00e0 $\\widehat{aOb}$ l\u00e0 hai g\u00f3c ph\u1ee5 nhau<br\/>Do \u0111\u00f3: $\\widehat{xOy}$ + $\\widehat{aOb}$ = $90^o$<br\/>Suy ra $\\widehat{aOb}$ = $90^o$ - $70^o$ = $20^o$<br\/>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i l\u00e0: <span class='basic_pink'> 35, 20<\/span><\/span> <br\/> "}]}],"id_ques":2185},{"time":9,"part":[{"title":"\u0110i\u1ec1n s\u1ed1 th\u00edch h\u1ee3p v\u00e0o ch\u1ed7 tr\u1ed1ng","title_trans":"","temp":"fill_the_blank","correct":[[["48"],["96"]]],"list":[{"point":5,"width":60,"type_input":"","ques":"Cho tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a g\u00f3c xOz. Bi\u1ebft $\\widehat{xOy}$ = $48^o$. V\u1eady $\\widehat{yOz}$ = _input_$^o$, $\\widehat{xOz}$ = _input_$^o$","hint":"","explain":"<span class='basic_green'>B\u00e0i gi\u1ea3i:<\/span><br\/><center><img src='https://www.luyenthi123.com/file/luyenthi123/lop6/toan/hinhhoc/bai13/lv1/img\/H624_D125.png' \/><\/center>Ta c\u00f3: Tia Oy l\u00e0 tia ph\u00e2n gi\u00e1c c\u1ee7a $\\widehat{xOz}$ <br\/>Suy ra $\\widehat{xOy}$ = $\\widehat{yOz}$ = $\\dfrac{1}{2}$ $\\widehat{xOz}$ = $48^o$<br\/>L\u1ea1i c\u00f3: $\\widehat{xOy}$ = $\\dfrac{1}{2}$ $\\widehat{xOz}$<br\/>Do \u0111\u00f3: $\\widehat{xOz}$ = 2. $\\widehat{xOy}$ = 2. $48^o$ = $96^o$<br\/>V\u1eady c\u00e1c s\u1ed1 c\u1ea7n \u0111i\u1ec1n v\u00e0o \u00f4 tr\u1ed1ng l\u1ea7n l\u01b0\u1ee3t t\u1eeb tr\u00e1i qua ph\u1ea3i l\u00e0: <span class='basic_pink'> 48, 96<\/span><\/span> <br\/> "}]}],"id_ques":2186},{"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":2187},{"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 $\\widehat{xOy}$ = $120^o$, $\\widehat{aOb}$ = $60^o$. 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\/>$\\widehat{xOy}$ + $\\widehat{aOb}$ = $120^o$ + $60^o$ = $180^o$<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":2188},{"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":" Tr\u00ean c\u00f9ng n\u1eeda m\u1eb7t ph\u1eb3ng b\u1edd Ox, bi\u1ebft $\\widehat{xOz}$ = $130^o$, $\\widehat{xOy}$ = $45^o$. T\u00ednh $\\widehat{yOz}$. ","select":["A. $\\widehat{yOz}$ = $75^o$","B. $\\widehat{yOz}$ = $85^o$","C. $\\widehat{yOz}$ = $165^o$","D. $\\widehat{yOz}$ = $175^o$"],"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/bai13/lv1/img\/H624_D126.png' \/><\/center>Ta c\u00f3: $\\widehat{xOy}$ < $\\widehat{xOz}$ (v\u00ec $45^o$ < $130^o$) 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 $\\widehat{xOz}$ = $130^o$, $\\widehat{xOy}$ = $45^o$, ta \u0111\u01b0\u1ee3c:<br\/> $45^o$ + $\\widehat{yOz}$ = $130^o$<br\/>Suy ra $\\widehat{yOz}$ = $130^o$ - $45^o$ = $85^o$ <br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: <span class='basic_pink'>B. $\\widehat{yOz}$ = $85^o$<\/span><\/span> <br\/><\/span>","column":2}]}],"id_ques":2189},{"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 $\\widehat{yOz}$ = $50^o$. T\u00ednh $\\widehat{xOy}$ ","select":["A. $\\widehat{xOy}$ = $40^o$","B. $\\widehat{xOy}$ = $50^o$","C. $\\widehat{xOy}$ = $130^o$","D. $\\widehat{xOy}$ = $120^o$"],"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 $\\widehat{yOz}$ = $50^o$, ta \u0111\u01b0\u1ee3c:<br\/>$\\widehat{xOy}$ + $50^o$ = $180^o$<br\/>Suy ra $\\widehat{xOy}$ = $180^o$ - $50^o$ = $130^o$<br\/>V\u1eady ta ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0: C. $\\widehat{xOy}$ = $130^o$<\/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":2190}],"lesson":{"save":0,"level":1}}

Điểm của bạn.

Câu hỏi này theo dạng chọn đáp án đúng, sau khi đọc xong câu hỏi, bạn bấm vào một trong số các đáp án mà chương trình đưa ra bên dưới, sau đó bấm vào nút gửi để kiểm tra đáp án và sẵn sàng chuyển sang câu hỏi kế tiếp

Trả lời đúng trong khoảng thời gian quy định bạn sẽ được + số điểm như sau:
Trong khoảng 1 phút đầu tiên + 5 điểm
Trong khoảng 1 phút -> 2 phút + 4 điểm
Trong khoảng 2 phút -> 3 phút + 3 điểm
Trong khoảng 3 phút -> 4 phút + 2 điểm
Trong khoảng 4 phút -> 5 phút + 1 điểm

Quá 5 phút: không được cộng điểm

Tổng thời gian làm mỗi câu (không giới hạn)

Điểm của bạn.

Bấm vào đây nếu phát hiện có lỗi hoặc muốn gửi góp ý