如图,
为
的直径,
交
于E点,
交
于D点,且D为
的中点,
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/cb473321-d274-4564-80a8-14c6d73dd5a0.png?resizew=145)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585602203346412291c791c66488c6b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3818a2c9919d358b4c3713396093822b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/14/cb473321-d274-4564-80a8-14c6d73dd5a0.png?resizew=145)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2024-03-14 13:26:13
|
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【推荐1】如图,
为正方形
外一点,且
是等边三角形,
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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【推荐2】如图,王涵书上的三角形被墨迹遮挡了一部分,测得看得见的两个角的度数分别为32°,58°,则这个三角形( )
![](https://img.xkw.com/dksih/QBM/2019/10/30/2323193240772608/2326651644116992/STEM/0242833a12d94293a691fb5406281704.png?resizew=84)
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A.是直角三角形 | B.是钝角三角形 | C.是锐角三角形 | D.无法判断出形状 |
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【推荐1】如图,D,E分别在等边三角形
的边
的延长线上,
,
,则
的度数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/4015b4f5-70d5-4432-946a-6747b5274681.png?resizew=129)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/25/4015b4f5-70d5-4432-946a-6747b5274681.png?resizew=129)
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【推荐1】如图,点F在正五边形
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A.72 | B.60 | C.36 | D.30 |
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【推荐2】如图,
中,
,
.将
绕点
逆时针旋转得到
,使点
的对应点
恰好落在边
上,则
的度数是( )
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【推荐1】如图所示,在⊙O中,OA=AB,OC⊥AB,则下列结论正确的是①AB的长等于圆内接正六边形的边长 ②弦AC的长等于圆内接正十二边形的边长 ③弧
弧
④∠BAC=30°
![](https://img.xkw.com/dksih/QBM/2012/4/17/1573368113201152/1573368207990784/STEM/c5000f214c0947beb0966a9fb60c3ae4.png?resizew=107)
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A.①②④ | B.①③④ | C.②③④ | D.①②③ |
您最近一年使用:0次
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【推荐2】已知△ABC,以AB为直径作⊙O,∠C=88°,则点C在( )
A.⊙O上 | B.⊙O外 | C.⊙O 内 |
您最近一年使用:0次