对于图中标记的各角，下列条件能够推理得到a∥b的是_刷题宝

题干

对于图中标记的各角，下列条件能够推理得到a∥b的是（）

A：∠1=∠2

B：∠2=∠4

C：∠3=∠4

D：∠1+∠4=180°

上一题下一题 0.0难度选择题更新时间:2014-01-21 08:48:57

答案(点此获取答案解析）

D

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