如图,
,
,
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/8ffc7c81-1a4b-43ac-868c-3a35fb2bb7d8.png?resizew=116)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37a9d4526ddf01eb414b7257661799b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79de59390a7059cfdea1f42ce1ffac70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/9/8ffc7c81-1a4b-43ac-868c-3a35fb2bb7d8.png?resizew=116)
A.20° | B.40° | C.60° | D.140° |
更新时间:2023-03-09 21:31:54
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【推荐1】下列命题中,是真命题的是( )
A.同位角相等 | B.有理数和数轴上的点一一对应 |
C.三角形的一个外角大于任何一个内角 | D.全等三角形对应边上的中线相等 |
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【推荐2】如图,有一个角为30°的直角三角板放置在一个长方形直尺上,若∠1=18°,则∠2的度数为( )
![](https://img.xkw.com/dksih/QBM/2022/4/13/2957152234708992/2957947152613376/STEM/7b560e9e-f822-4f12-8b75-f3f870f05f19.png?resizew=190)
![](https://img.xkw.com/dksih/QBM/2022/4/13/2957152234708992/2957947152613376/STEM/7b560e9e-f822-4f12-8b75-f3f870f05f19.png?resizew=190)
A.162° | B.142° | C.138° | D.135° |
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