如图,在圆内接四边形
中,对角线
相交于点
.已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f82650fa507d7ebe933d447067093ad.png)
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6523615f59be6afb9c85a8fd13986189.png)
_____________ ,
的长是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f82650fa507d7ebe933d447067093ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b27af7868ae7bfc55d597d44f8bfe30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e90dd13e9804010653b6dae413ad3d8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6523615f59be6afb9c85a8fd13986189.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://img.xkw.com/dksih/QBM/2011/8/27/1570292159561728/1570292164739072/STEM/8f4c43e52bcf488cbc81542c40516a94.png?resizew=210)
10-11高二下·北京·期中 查看更多[1]
(已下线)2010-2011学年北京师大附中高二下学期期中考试理科数学
更新时间:2016-11-30 23:50:29
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【知识点】 几何证明选讲
相似题推荐
填空题-单空题
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较易
(0.85)
【推荐1】如图,
为圆
的两条割线,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad3f71ae38f3f04f112bb799c39142e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c5d2b1f9269e4fecd22878c4afd0425.png)
,则
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7fbe500296c20faff8c8b1c694b67d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bad3f71ae38f3f04f112bb799c39142e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c5d2b1f9269e4fecd22878c4afd0425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2012/11/12/1571059827736576/1571059832946688/STEM/b25fb3c2-d686-4836-bc11-ed51ebfdd27a.png?resizew=248)
您最近一年使用:0次
填空题-单空题
|
较易
(0.85)
【推荐2】如图,
是圆O的切线,割线EB交圆O于点C,C在直径AB上的射影为D,CD=2,BD=4,则EA=______________
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005849546752/1572005855346688/STEM/c23deccb745948fe953e56820425720e.png?resizew=25)
![](https://img.xkw.com/dksih/QBM/2015/3/12/1572005849546752/1572005855346688/STEM/7dc61b3b98044ce78c19f14e396960ab.png?resizew=139)
您最近一年使用:0次