如图,将
绕点A逆时针方向旋转
,得到
,若点
在线段
的延长线上,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c021993da445858448d368df42554c8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c8a9c4957431681ddfc77895a88508.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c221806e627f03e76576359006c511b.png)
A. ![]() | B. ![]() | C. ![]() | D.![]() |
更新时间:2023-04-14 20:05:37
|
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【推荐1】
中,如果
,那么
的形状是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.锐角三角形 | B.直角三角形 | C.钝角三角形 | D.不能确定 |
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【推荐2】下列条件中,不能判断一个三角形是直角三角形的是 ( )
A.三个角满足关系![]() | B.三条边满足关系![]() |
C.三边之比为![]() | D.三个角的比为![]() |
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名校
【推荐2】如图,在
中,
,
,以点C为圆心,BC为半径的圆分别交AB、AC于点D、点E,则弧BD的度数为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/650c6760-fbc9-49e4-9645-b65f24d46efb.png?resizew=177)
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![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/30/650c6760-fbc9-49e4-9645-b65f24d46efb.png?resizew=177)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】如图,在正方形ABCD中,E为CD上的一点,连接BE,若∠EBC=20°,将△EBC绕点C按顺时针方向旋转90°得到△FDC,连接EF,则∠EFD的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/94ef48bb-771c-4ef7-96dc-a969fea0319e.png?resizew=140)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/2/94ef48bb-771c-4ef7-96dc-a969fea0319e.png?resizew=140)
A.15° | B.20° | C.25° | D.30° |
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【推荐2】如图,在
中,
,将
绕点C逆时针旋转
得到△
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/18/f6f3b53b-549d-435a-a7ed-1aa91b39795f.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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