⊙O的直径AB和弦CD相交于点E,已知AE=6cm,EB=2cm,∠CEA=30°,则弦CD的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/27/8b4bedc3-cc8f-41c1-9ab2-8ec43dd2137e.png?resizew=126)
A.8cm | B.4cm | C.2![]() | D.2![]() |
更新时间:2020-04-06 15:02:44
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】如图,矩形
的对角线
与
交于点
,过点
作
的垂线分别交
、
于
、
两点,若
,
,则
的长度为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/245fa239-16cf-4094-a743-4b4d09bbed56.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33c99fc553ecb3e2afdb7058201bc642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69b1ce336399515961b3938820be50a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/735056c174e8dd7906257a2a50a962a7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/15/245fa239-16cf-4094-a743-4b4d09bbed56.png?resizew=192)
A.1 | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,菱形
的对角线交于点O,
,
,则菱形的高为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2fae188b381c5ba01b3d9d742c687dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4f71a52438196c3aca604fa927be8e5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
名校
【推荐2】如图,矩形ABCD的顶点B,C分别在x轴,y轴上,OB=4,OC=3,AB=10,将矩形ABCD绕点O顺时针旋转,每次旋转90°,则第2021次旋转结束时,点A的坐标为( )
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955985187446784/2956719392620544/STEM/3e539551-a9ba-4caa-84ee-a76a5500d8d9.png?resizew=166)
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955985187446784/2956719392620544/STEM/3e539551-a9ba-4caa-84ee-a76a5500d8d9.png?resizew=166)
A.(10,8) | B.(8,-10) | C.(-10,8) | D.(-8,10) |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,
是
的直径,
是弦,
于点E,交
于点D,
的度数为60°,
,则
的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/e4cc70d6-01e7-4f37-8567-5655e716edf6.png?resizew=103)
![](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/a11c1db76cc7e1894f74a50d71736455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed41d321f4c0717ac5b443aad942d9a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dafddfd80f69337909f6eac0f0dbfd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/e4cc70d6-01e7-4f37-8567-5655e716edf6.png?resizew=103)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,△ABC内接于⊙O,OC⊥OB,OD⊥AB于D交AC于E点,已知⊙O的半径为1,则
的值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/25/8e921fbb-f15e-45cd-bdfc-5a5cb7e1d37b.png?resizew=123)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd82ccbd9ff0ad7899f3bb226a174a4e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/25/8e921fbb-f15e-45cd-bdfc-5a5cb7e1d37b.png?resizew=123)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次