单选题 较易0.85 引用10 组卷3498
如图,下列条件中,能判断直线a∥b的有( )个.
①∠1=∠4;
②∠3=∠5;
③∠2+∠5=180°;
④∠2+∠4=180°
![](https://img.xkw.com/dksih/QBM/2019/3/14/2160297922428928/2160455567433728/STEM/2b2e59c9869b4bd88c5a9c8fa8cdb514.png?resizew=149)
①∠1=∠4;
②∠3=∠5;
③∠2+∠5=180°;
④∠2+∠4=180°
![](https://img.xkw.com/dksih/QBM/2019/3/14/2160297922428928/2160455567433728/STEM/2b2e59c9869b4bd88c5a9c8fa8cdb514.png?resizew=149)
A.1 | B.2 | C.3 | D.4 |
17-18七年级下·全国·单元测试
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