如图,能判断直线AB∥CD的条件是( )
![](https://img.xkw.com/dksih/QBM/2020/6/18/2487502785740800/2492395170553856/STEM/0a2d04bb-03a8-46b3-ba2a-4ab684280b2e.png)
![](https://img.xkw.com/dksih/QBM/2020/6/18/2487502785740800/2492395170553856/STEM/0a2d04bb-03a8-46b3-ba2a-4ab684280b2e.png)
A.∠1=2∠2 | B.∠3=∠4 | C.∠1+∠3=180° | D.∠3+∠4=180° |
更新时间:2020-07-11 09:30:43
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【推荐1】如图,直线AB、CD交于O,OE是∠BOC的平分线且∠BOE=55度,那么∠AOE=( )度.
![](https://img.xkw.com/dksih/QBM/2021/4/20/2703983033819136/2704123011252224/STEM/115231f0-d3b5-480e-8a47-1f6efb63cd5a.png?resizew=155)
![](https://img.xkw.com/dksih/QBM/2021/4/20/2703983033819136/2704123011252224/STEM/115231f0-d3b5-480e-8a47-1f6efb63cd5a.png?resizew=155)
A.70 | B.110 | C.125 | D.135 |
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【推荐2】如图所示,直线AB与CD相交于点O,OB平分∠DOE,若∠AOE=150°,则∠DOE的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/b4c3dee5-4a82-4dd7-8840-a997f8c2bcd8.png?resizew=158)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/2/b4c3dee5-4a82-4dd7-8840-a997f8c2bcd8.png?resizew=158)
A.150° | B.100° | C.60° | D.30° |
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【推荐2】如图,给出了过直线外一点作已知直线的平行线的方法,其依据是( )
A.两直线平行,同位角相等 |
B.内错角相等,两直线平行 |
C.两直线平行,同旁内角互补 |
D.同位角相等,两直线平行 |
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