如图,将含有
锐角的三角板
绕
的锐角顶点C逆时针旋转
到
,
、
相交于点F,连接
,若
,则旋转角
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/b33172fc-c75b-4ae4-91d5-f59035b8754d.png?resizew=237)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efc7b22d85ff04a0ac89743f0bea1f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b265d121f9ebc13671a5719604476a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38d97f03faed3152db2fd3bd1919944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/b33172fc-c75b-4ae4-91d5-f59035b8754d.png?resizew=237)
A.![]() | B.![]() | C.![]() | D.![]() |
20-21九年级上·安徽芜湖·期末 查看更多[8]
更新时间:2023-02-21 19:09:28
|
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【推荐1】如图,直线
,点C、A分别在
、
上,以点C为圆心,
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.若
,则
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A.10° | B.15° | C.20° | D.30° |
您最近一年使用:0次
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名校
【推荐2】在探索数学名题“尺规三等分角”的过程中,有下面的问题:如图,BD是平行四边形ABCD的对角线,点E在BD上,且DE=AD=CE,∠DAB=108°,则∠BDC的大小是( )
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971188122869760/2972114701565952/STEM/223209dc264a4583ad8aa11d0d88186d.png?resizew=261)
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您最近一年使用:0次
单选题
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【推荐1】如图,已知
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/13/a5b8574e-8259-405c-9476-858b491afd4a.png?resizew=168)
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您最近一年使用:0次
单选题
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【推荐2】若等腰三角形的底角是顶角的
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您最近一年使用:0次
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【推荐1】如图,在
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/b8716faf-9655-423f-b7a8-7dfbcb7e3636.png?resizew=173)
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您最近一年使用:0次
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【推荐2】如图,
中,
,将
绕点B逆时针方向旋转得到
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上,
交
于点E,则
与
的面积之比为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/30/42b39ac4-a6ec-47ee-960f-3df1ff09d6a6.png?resizew=166)
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