下列说法中一定正确的是( )
A.相等的圆心角所对的弧相等 |
B.圆上任意两点间的部分叫做圆弧 |
C.平分弦的直径垂直于弦 |
D.圆周角等于圆心角的一半 |
更新时间:2021-10-24 17:28:01
|
相似题推荐
单选题
|
较易
(0.85)
【推荐1】下列说法不正确的是( )
A.圆是轴对称图形,它有无数条对称轴 |
B.圆的半径、弦长的一半、弦上的弦心距能组成一直角三角形,且圆的半径是此直角三角形的斜边 |
C.弦长相等,则弦所对的弦心距也相等 |
D.垂直于弦的直径平分这条弦,并且平分弦所对的弧 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】下列语句中,正确的是( )
A.同一平面内,三个点确定一个圆 | B.同弧或等弧所对的圆周角相等 |
C.平分弦的直径垂直于弦,并且平分弦所对的弧 | D.圆内接四边形一定是矩形 |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】如图,
为
的切线,B为切点,
交
于点C,点D在
上,连接
.若
,则
的度数为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/29408918-4591-4970-82cd-c8773a994244.png?resizew=152)
![](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/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c648899641f3e3c6ed9edd5ed9d23389.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/945a0980c4d2a7bbf29f546ef51437c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c543c3ddc3723fde6bbfca3ea3b921b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/29408918-4591-4970-82cd-c8773a994244.png?resizew=152)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐1】如图,
是⊙
上的两个点,
是弦,若
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/3da28fff-c45c-4e6f-b262-68ede32d1382.png?resizew=186)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea8d2436104194afbfb66c3fe9bbb41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e308a55d87f39bc74d9e008a59c172.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/18/3da28fff-c45c-4e6f-b262-68ede32d1382.png?resizew=186)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】如图,
内接于
,
为
的直径,若
,
,则
的值为( )
![](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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f26ad70d2b3aac8604834d57dfc59bb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0bb9e49f8f8a2cd06311bbc45eaadd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次