如图,矩形ABCD的对角线交于点O,若
,
,则OC的长为( )
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343646772903936/2344169771917313/STEM/7874e3d4dbd7432bb39eb86e0b5e20c5.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304a668f5d6868098cba03715055d879.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4251e3d0453c9dbb10c3730dd7f85649.png)
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343646772903936/2344169771917313/STEM/7874e3d4dbd7432bb39eb86e0b5e20c5.png?resizew=189)
A.2 | B.3 | C.![]() | D.4 |
更新时间:2019-11-30 15:37:27
|
【知识点】 根据矩形的性质求线段长解读
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单选题
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适中
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【推荐1】如图,在矩形
中,
,点O在对角线
上,以
为半径作
交
于点E,连接
,若
是
的切线,此时
的半径为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
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A.2 | B.![]() | C.![]() | D.![]() |
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【推荐2】如图,在矩形ABCD中,点E、F分别是AB、BC上的点,
,
,
,∠FDE=45°,则BC的长为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/a0cbf0a6-5fee-4548-863b-0e21e1d73de3.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f218914337edd06e59e75d90b777e6.png)
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/17/a0cbf0a6-5fee-4548-863b-0e21e1d73de3.png?resizew=140)
A.![]() | B.![]() | C.![]() | D.![]() |
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