如图,a∥b,∠1=130°,∠2=90°,则∠3的度数为 _____ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/11/79333b7e-509e-46dc-92ad-a41839f9cdbd.png?resizew=157)
更新时间:2022-08-05 13:57:18
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