如图,已知a∥b,若∠3=120°,则∠1=________ ;∠2=________ .
![](https://img.xkw.com/dksih/QBM/2018/4/15/1924500953325568/1926007050100736/STEM/85fc2ad0e620447daaaeddf1f52bb5b7.png?resizew=134)
更新时间:2018-04-19 15:58:40
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【知识点】 平行线的判定与性质
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【推荐1】已知:
,
与
之间的距离为
,
与
之间的距离为
,则
与
之间的距离为___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b1672cb57726d3fe30fc824dd38745d.png)
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【推荐2】如右图所示,已知直线
、
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是
的角平分线,若
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的度数是________ .
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