如图,等边
的边长为2,点A,B在
上,点C在
内,
的半径为
,将△
绕点A逆时针旋转,当AC第一次与
相切时,旋转角为__________ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/cd82721e-786b-4657-bdcb-bb392879e267.png?resizew=87)
更新时间:2024-03-07 08:42:30
|
相似题推荐
填空题
|
较易
(0.85)
【推荐1】如图,将等边
绕
点按逆时针方向旋转
,得到
(点
分别是点A,
的对应点),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494ba20b1444f524cf636961e4688ae8.png)
________ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a12c461765806bbfb872e7e8aa410c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b17feedef8b38275d0b9bf982a5478ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77993759b8615ef0b42cb56ef027ff0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/494ba20b1444f524cf636961e4688ae8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/b92e4a33-35e4-4153-b16b-83ab55ac5b7e.png?resizew=173)
您最近一年使用:0次
填空题
|
较易
(0.85)
【推荐2】如图,在正方形
内作等边三角形
,则
的度数为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6344778ed1e75c1a99e2268468081867.png)
您最近一年使用:0次
填空题
|
较易
(0.85)
【推荐1】如图,AB是
的弦,AC是
的切线,A为切点,BC经过圆心.若
,
,则
的半径等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fc998d33cdf37c272f79cfd64b7b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://img.xkw.com/dksih/QBM/2022/1/14/2894365984694272/2933842985590784/STEM/74eae35bf36649d6939e545822e3130c.png?resizew=129)
您最近一年使用:0次
填空题
|
较易
(0.85)
真题
名校
【推荐2】如图,在△ABC中,AC=2,BC=4,点O在BC上,以OB为半径的圆与AC相切于点A,D是BC边上的动点,当△ACD为直角三角形时,AD的长为___________ .
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/20/82e42c94-f8c6-47a1-aa7e-1835405fbfe6.png?resizew=160)
您最近一年使用:0次
填空题
|
较易
(0.85)
【推荐1】如图,正五边形
的边
在直线
上,现将其绕点
按顺时针方向旋转一定角度,使五边形的边
的对应边
落在直线
上,则正五边形旋转的最小角度是________ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ba89e83329983cfadbfcdda151aaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/2021/7/9/2760549001404416/2765628563357696/STEM/6ba15767-50e4-4ddf-95a5-f63288e2445a.png)
您最近一年使用:0次
填空题
|
较易
(0.85)
名校
【推荐2】如图,在平行四边形
中,
,将平行四边形
绕顶点B顺时针旋转到平行四边形
,当
首次经过顶点C时,旋转角![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b12764acb1936e64173715f78ff2b6a.png)
__________ °.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e702e136211878dce558e0457f15df63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e963c942be5c658864dee9bb352b36c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b12764acb1936e64173715f78ff2b6a.png)
您最近一年使用:0次