如图,在
中,
,将
在平面内绕点A旋转到
的位置,使
,则旋转角的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/938cec097a488e0ac6400037435a016c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c021993da445858448d368df42554c8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267e07d4aa26bbb8ecf669b66b9fd643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-03-21 09:30:25
|
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【推荐1】在等腰三角形
中,
,
是
边上任意一点(点
不和
、
两点重合),过点
作
的垂线,与直线
交于点
,若
,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐2】等腰三角形一腰上的高与另一腰的夹角是40°,则它的顶角度数是( )
A.50° | B.50°或130° | C.40°或140° | D.60°或120° |
您最近一年使用:0次
单选题
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较易
(0.85)
【推荐1】如图,
绕点O顺时针旋转
到
的位置,已知
,则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391479c151307826c9765a47a5f10503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5784ea22dbd90af6cdceae43f80a22e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d22df2977de56cc69be0c1e847653d7a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/628e7554-c651-4331-be84-d9ad2dbef42d.png?resizew=173)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
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较易
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【推荐2】如图,在Rt△ABC中,∠C=90°,∠A=30°,AC=10.将直线CB绕着点C顺时针方向旋转,旋转过程中与边AB交于点D,当旋转15°时,△ACD的面积为( )
![](https://img.xkw.com/dksih/QBM/2021/11/8/2846853585346560/2848473978159104/STEM/f3b79f0b-8e42-4848-b944-69e37bb48295.png)
![](https://img.xkw.com/dksih/QBM/2021/11/8/2846853585346560/2848473978159104/STEM/f3b79f0b-8e42-4848-b944-69e37bb48295.png)
A.25 | B.25![]() | C.50 | D.50![]() |
您最近一年使用:0次