给定下列条件,不能判定三角形是直角三角形的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2024-05-20 09:47:18
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【知识点】 三角形内角和定理的应用解读
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【推荐2】如图,
是
的直径,
是
的弦.若
,则
的大小为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/d074bd0b-2d53-458e-8134-f2838728338a.png?resizew=120)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9925407467278420029b8ab7b9561a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9925407467278420029b8ab7b9561a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f3f98481d44d0fb3a9f0f068859234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d807fd20a6aaf0b27594d1d151d4a673.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/d074bd0b-2d53-458e-8134-f2838728338a.png?resizew=120)
A.21° | B.59° | C.69° | D.79° |
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