如图,是由
绕点O顺时针旋转
后得到的图形,若点D恰好落在
上,且
,求
的度数.
更新时间:2024-01-12 10:59:07
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【推荐2】如图所示,在
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分别是
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(2)若
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(1)若
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae55a0c2394db34861f116b0a6d3b0e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cadebaf26e710af11ee0a8a8521c2633.png)
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【推荐1】如图,在△ABC中,AB=AD=DC,∠BAD=20°,求∠C的度数?
![](https://img.xkw.com/dksih/QBM/2017/11/28/1826929645232128/1827858778611712/STEM/3462c721-db81-42be-836a-7a94e5dca1b8.png)
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【推荐2】如图,在
中,边
,
的垂直平分线分别交
于点D,E.
(1)若
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,则
;
(2)若
,求
的度数;
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,
交于点O,判断点O是否在
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(1)若
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(2)若
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(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
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【推荐1】在
中,
,
,
,点
在直线
上,
在边
上,且
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.
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;
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沿
方向平移,使点
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上,得到
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上,得到
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a130e7c109e2196b97e1a76281bf3cf6.png)
(1)如图1,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc7897e3f49075943704f4dbef82e5b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/17/b2d5ebc5-d696-428b-8a9d-37c78c4f722d.png?resizew=189)
(2)如图2,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b265d121f9ebc13671a5719604476a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
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(3)如图3,将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b265d121f9ebc13671a5719604476a.png)
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【推荐2】如图,在正方形
中,
为
边上的点,连接
,将
绕
点顺时针旋转
,得到
,连结
,若
,求
的度数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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