本课配套习题挑战模式1/5
单选题
难度系数:
1.下列说法正确的是( )
A: 若两个角相等,则这两个角是对顶角 |
B: 若两个角是对顶角,则这两个角是相等 |
C: 若两个角不是对顶角,则这两个角不相等 |
D: 所有的对顶角相等 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5a+56aG26KeS55qE5a6a5LmJ5Y+K5oCn6LSo77yM5a+55q+P5Liq6YCJ6aG55YiG5Yir5Yik5pat44CB6Kej562U5Ye65Y2z5Y+v77yO
- 答案:Qg==
6Kej77ya5qC55o2u5a+56aG26KeS55qE5a6a5LmJ77ya5pyJ5LiA5Liq5YWs5YWx6aG254K577yM5bm25LiU5LiA5Liq6KeS55qE5Lik6L655YiG5Yir5piv5Y+m5LiA5Liq6KeS55qE5Lik6L6555qE5Y+N5ZCR5bu26ZW/57q/77yM5YW35pyJ6L+Z56eN5L2N572u5YWz57O755qE5Lik5Liq6KeS77yM5LqS5Li65a+56aG26KeS77ybPGJyPuKItOmAiemhuUHjgIFD6ZSZ6K+v77ybPGJyPuagueaNruWvuemhtuinkueahOaAp+i0qO+8muWvuemhtuinkuebuOetie+8mzxicj7iiLTpgInpoblE6ZSZ6K+v77ybPGJyPuaVhemAiULvvI4=
本课配套习题挑战模式2/5
单选题
难度系数:
2.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° |
一次做对,真牛!
+5奖励规则>
- 提示1:5b2T5pyo5p2hY+e7leeCuU/ml4vovazliLDkuI7nm7Tnur9h5Z6C55u05pe277yM566X5Ye64oigMeeahOW6puaVsO+8jOWGjeagueaNruW5s+inkuWumuS5ieiuoeeul+WHuuKIoDLnmoTluqbmlbDljbPlj6/vvI4=
- 答案:Qg==
6Kej77ya5aaC5Zu+5omA56S677yaPGJyPuW9k+acqOadoWPnu5XngrlP5peL6L2s5Yiw5LiO55u057q/YeWeguebtOaXtu+8jDxicj7iiKAxPTE4MMKw77mjNjDCsO+5ozkwwrA9MzDCsO+8jDxicj7liJniiKAyPTE4MMKw77mjMzDCsO+5ozEwMMKwPTUwwrDvvIw8YnI+5pWF6YCJ77yaQu+8jjxicj48aW1nIHdpZHRoPTEzNyBoZWlnaHQ9MTEyIHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvQzcvQUIvckJBQ0UxV2JtTTN5aFVhQUFBQVJiX1FYUDZJOTc4LnBuZyIgPg==
本课配套习题挑战模式3/5
单选题
难度系数:
3.如图,直线AB、CD、EF相交于点O,则∠1+∠2+∠3的度数为( )
A: 90° |
B:120° |
C:180° |
D: 不能确定 |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5a+56aG26KeS55u4562J5Y+v5b6X4oigND3iiKAx77yM5YaN5qC55o2u5bmz6KeS55qE5a6a5LmJ6Kej562U77yO
- 答案:Qw==
6Kej77ya5aaC5Zu+77yM4oigND3iiKAx77yMPGJyPuKIteKIoDIr4oigMyviiKA0PTE4MMKw77yMPGJyPuKItOKIoDEr4oigMiviiKAzPTE4MMKw77yOPGJyPuaVhemAiUPvvI48YnI+PGltZyB3aWR0aD0xMzggaGVpZ2h0PTEwNiBzcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzkxL0IyL3JCQUNKbFdibU5LanBBVnBBQUFTeWZMcUN2dzk1My5wbmciID4=
本课配套习题挑战模式4/5
单选题
难度系数:
4.已知如图,直线AB、CD相交于点O,∠AOC=70°,OE把∠BOD分成两部分,且∠BOE:∠EOD=2:3,则∠AOE=( )
A: 162° |
B: 152° |
C: 142° |
D: 132° |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u5a+56aG26KeS55u4562J5rGC5Ye64oigQk9E55qE5bqm5pWw77yM5YaN5qC55o2u4oigQk9F77ya4oigRU9EPTLvvJoz5rGC5Ye64oigQk9F55qE5bqm5pWw77yM54S25ZCO5Yip55So5LqS5Li66YK76KGl6KeS55qE5Lik5Liq6KeS55qE5ZKM562J5LqOMTgwwrDljbPlj6/msYLlh7riiKBBT0XnmoTluqbmlbDvvI4=
- 答案:Qg==
6Kej77ya4oi14oigQU9DPTcwwrDvvIw8YnI+4oi04oigQk9EPeKIoEFPQz03MMKw77yMPGJyPuKIteKIoEJPRe+8muKIoEVPRD0y77yaM++8jDxicj7iiLTiiKBCT0U9PGltZyB3aWR0aD0yNiBoZWlnaHQ9MzUgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC85MS9EMS9yQkFDSjFXYm1OV3diNl94QUFBQmFUS24ydlUzMjAucG5nIiA+w5c3MMKwPTI4wrDvvIw8YnI+4oi04oigQU9FPTE4MMKw77mjMjjCsD0xNTLCsO+8jjxicj7mlYXpgInvvJpC77yO
本课配套习题挑战模式5/5
单选题
难度系数:
5.按要求画图:点K在直线a上,也在直线b上,但不在直线c上,直线a、b、c两两相交.下列画图正确的是( )
A: |
B: |
C: |
D: |
一次做对,真牛!
+5奖励规则>
- 提示1:5qC55o2u6aKY5oSP77yM54K5S+aYr+ebtOe6v2HjgIFi55qE5Lqk54K577yM5Zyo55u057q/Y+Wklu+8jg==
- 答案:Qw==
6Kej77ya55Sx6aKY5oSP5b6X77yMPGltZyB3aWR0aD0xMDggaGVpZ2h0PTg2IHNyYz0iaHR0cHM6Ly9wMi5xaW5nZ3VvLmNvbS9HMS9NMDAvMzgvMDUvckJBQ0ZGV2JtTm1qZGdmNEFBQU1MVVpuQnFzMzQ2LnBuZyIgPu+8jjxicj7mlYXpgIlD77yO