点
是等腰
的外心,且
,
为底边,则
的度数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36c0d4e38748fbb4a6cf5e700e5e874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
A.30° | B.30°或150° | C.150° | D.60°或120° |
更新时间:2023-03-24 16:31:07
|
相似题推荐
单选题
|
较易
(0.85)
名校
【推荐1】如图,A、B、C在⊙O上,∠A=50°,则∠OBC的度数是( )
![](https://img.xkw.com/dksih/QBM/2019/11/14/2333750677864448/2336095153176576/STEM/372e30f8465b49388b0d70a9bcdd12e0.png?resizew=92)
![](https://img.xkw.com/dksih/QBM/2019/11/14/2333750677864448/2336095153176576/STEM/372e30f8465b49388b0d70a9bcdd12e0.png?resizew=92)
A.50° | B.40° | C.100° | D.80° |
您最近一年使用:0次
单选题
|
较易
(0.85)
名校
【推荐2】如图,AB是⊙O的直径,AC是⊙O的切线,A为切点,BC与⊙O交于点D,连接OD.若∠C=46°,则∠AOD的度数为( )
A.44° | B.88° | C.46° | D.92° |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】如图,A,B,C三点均在⊙O上,∠A+∠C=100°,则∠O等于( )
![](https://img.xkw.com/dksih/QBM/2022/6/13/3000649768763392/3002716678733824/STEM/d11ec428250f460fb8caa41289c09d40.png?resizew=133)
![](https://img.xkw.com/dksih/QBM/2022/6/13/3000649768763392/3002716678733824/STEM/d11ec428250f460fb8caa41289c09d40.png?resizew=133)
A.160° | B.140° | C.100° | D.80° |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】如图,四边形
内接于⊙O,
是
的直径,连接
交
于点E,若
,则
的度数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b32e5f08d3d4dbadcfce8cc894f60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
A.100° | B.105° | C.110° | D.115° |
您最近一年使用:0次