{"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}}