如图,直线
,直线
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc310194575262fb45352c2fbc19868.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fbc714c63815dad9a27418f6492f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc3ef6a72ecee9efdca1f447fa243d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cc310194575262fb45352c2fbc19868.png)
更新时间:2021-04-17 21:17:03
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【推荐1】如图,a//b,∠1=(3x+20)°,∠2=(2x+10)°,那么∠3=___________
![](https://img.xkw.com/dksih/QBM/2013/5/22/1573654990610432/1573654996738048/STEM/583763065ac8439798aa34d655bf4d74.png?resizew=147)
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【推荐2】如图,
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1326e85ff750d882de9ea65c29e3d3b9.png)
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【推荐2】如图,在△ABC中,AD是BC边上的高,AE是∠BAC的平分线,若∠B=70°,∠C=40°,则∠DAE的度数为______ .
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