如图,将一个三角板
角的顶点与另一个三角板的直角顶点重合,
,
的余角的大小是( )
![](https://img.xkw.com/dksih/QBM/2020/2/6/2393236117094400/2393287542947840/STEM/ace2d6b1eb90435d9f0b737e74d1b9e8.png?resizew=318)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03974d98d44543e8d138e763e7f39b1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d57899ad4774aed9ccc7bd23db72153.png)
![](https://img.xkw.com/dksih/QBM/2020/2/6/2393236117094400/2393287542947840/STEM/ace2d6b1eb90435d9f0b737e74d1b9e8.png?resizew=318)
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更新时间:2020-02-06 18:18:52
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【知识点】 三角板中角度计算问题解读
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【推荐1】一副三角尺按如图所示位置放置,
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【推荐2】一副透明的三角板,如图叠放,直角三角板的斜边
、
相交于点D,则
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/19/36d686c3-06be-4776-bb4d-2e238a84569a.png?resizew=123)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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