本课配套习题挑战模式1/5
如图,直线AB,CD相交于点O,射线OM平分∠AOC,ON⊥OM,若∠AOM=35°,则∠CON的度数为( )
A: 35° |
B: 45° |
C: 55° |
D: 65° |
- 提示1:PHA+55Sx5bCE57q/T03lubPliIbiiKBBT0PvvIziiKBBT009MzXCsO+8jOW+l+WHuuKIoE1PQz0zNcKwPC9wPg==
- 提示2:PHA+55SxT07iiqVPTe+8jOW+l+WHuuKIoENPTj3iiKBNT04t4oigTU9D5b6X5Ye6562U5qGI77yOPC9wPg==
- 答案:Qw==
PHA+6Kej77ya4oi15bCE57q/T03lubPliIbiiKBBT0PvvIziiKBBT009MzXCsO+8jDxicj7iiLTiiKBNT0M9MzXCsO+8jDxicj7iiLVPTuKKpU9N77yMPGJyPuKItOKIoE1PTj05MMKw77yMPGJyPuKItOKIoENPTj3iiKBNT04t4oigTU9DPTkwwrAtMzXCsD01NcKw77yOPGJyPuaVhemAie+8mkPvvI48L3A+
本课配套习题挑战模式2/5
如图,AB,CD,EF相交于点O,AB⊥CD,OG平分∠AOE,∠FOD=28°,则∠AOG的度数为( )
A: 56° |
B: 59° |
C: 60° |
D: 62° |
- 提示1:PHA+6aaW5YWI5qC55o2u5Z6C57q/5a6a5LmJ5Y+v5b6X4oigQU9EPTkwwrDvvIzlho3moLnmja7iiKBBT0bnmoTluqbmlbDvvIzov5vogIznrpflh7riiKBBT0XnmoTluqbmlbDvvIzlho3liKnnlKjop5LlubPliIbnur/mgKfotKjlj6/lvpfnrZTmoYjvvI48L3A+
- 答案:Qg==
PHA+6Kej77ya4oi1QULiiqVDRO+8jDxicj7iiLTiiKBBT0Q9OTDCsO+8jDxicj7iiLXiiKBGT0Q9MjjCsO+8jDxicj7iiLTiiKBBT0Y9OTDCsC0yOMKwPTYywrDvvIw8YnI+4oi04oigQU9FPTE4MMKwLTYywrA9MTE4wrDvvIw8YnI+4oi1T0flubPliIbiiKBBT0XvvIw8YnI+4oi04oigQU9HPTExOMKww7cyPTU5wrDvvIw8YnI+5pWF6YCJ77yaQu+8jjwvcD4=
本课配套习题挑战模式3/5
如图,直线a,b及木条c在同一平面内,将木条c绕点O旋转到与直线a垂直时,其最小旋转角为( )
A: 60° |
B: 50° |
C: 40° |
D: 30° |
- 提示1:PHA+5b2T5pyo5p2hY+e7leeCuU/ml4vovazliLDkuI7nm7Tnur9h5Z6C55u05pe277yM566X5Ye64oigMeeahOW6puaVsO+8jOWGjeagueaNruW5s+inkuWumuS5ieiuoeeul+WHuuKIoDLnmoTluqbmlbDljbPlj6/vvI48L3A+
- 答案:Qg==
PHA+6Kej77ya5aaC5Zu+5omA56S677yaPGJyPuW9k+acqOadoWPnu5XngrlP5peL6L2s5Yiw5LiO55u057q/YeWeguebtOaXtu+8jDxicj7iiKAxPTE4MMKwLTYwwrAtOTDCsD0zMMKw77yMPGJyPuWImeKIoDI9MTgwwrAtMzDCsC0xMDDCsD01MMKw77yMPGJyPuaVhemAie+8mkLvvI48YnI+PGltZyBzcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwL0ZBLzFEL3JCQUNGRlVfVktMRHJQYUtBQUFVbWlWZmxjWTQ0Ny5wbmciIGRhdGEtY2tlLXNhdmVkLXNyYz0iaHR0cHM6Ly9wMS5xaW5nZ3VvLmNvbS9HMS9NMDAvRkEvMUQvckJBQ0ZGVV9WS0xEclBhS0FBQVVtaVZmbGNZNDQ3LnBuZyIgaGVpZ2h0PSIxMzMiIHdpZHRoPSIxNTAiPjwvcD4=
本课配套习题挑战模式4/5
如图,已知直线AB与CD相交于O,EO⊥CD,垂足为O,则图中∠AOE和∠DOB的关系是( )
A: 同位角 |
B: 对顶角 |
C: 互为补角 |
D: 互为余角 |
- 提示1:PHA+55Sx5LqO4oigQU9D5ZKM4oigRE9C5piv5a+56aG26KeS77yM6ICMRU/iiqVDRO+8jOWegui2s+S4uk/vvIznlLHmraTlj6/ku6XlvpfliLDiiKBBT0XlkoziiKBBT0PmmK/kupLkvZnnmoTop5LvvIzov5vkuIDmraXlsLHlj6/ku6XlvpfliLDiiKBBT0XlkoziiKBET0LnmoTlhbPns7vvvI48L3A+
- 答案:RA==
PHA+6Kej77ya4oi155u057q/QULkuI5DROebuOS6pOS6jk/vvIw8YnI+4oi04oigQU9D5ZKM4oigRE9C5piv5a+56aG26KeS77yMPGJyPuWNs+KIoEFPQz3iiKBET0LvvIw8YnI+4oi1RU/iiqVDRO+8jOWegui2s+S4uk/vvIw8YnI+4oi04oigQU9F5ZKM4oigQU9D5LqS5L2Z77yMPGJyPuKItOKIoEFPReWSjOKIoERPQueahOWFs+ezu+aYr+S6kuS9meeahOWFs+ezu++8jjxicj7mlYXpgInvvJpE77yOPC9wPg==
本课配套习题挑战模式5/5
下列说法中正确的是( )
A: 若两个角不是对顶角,则这两个角不相等 |
B: 两条直线相交所成的四个角中,如果有三个角相等,那么这两条直线互相垂直 |
C: 过一点有且只有一条直线与已知直线垂直 |
D: 直线外一点到这条直线的垂线段叫点到直线的距离 |
- 提示1:PHA+5qC55o2u5a+56aG26KeS77yM5Z6C57q/5Y+K54K55Yiw55u057q/55qE6Led56a755qE5qaC5b+15p2l5Yik5a6a5Y2z5Y+v77yOPC9wPg==
- 答案:Qg==
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