如图,Rt△ABC中,CD是斜边AB上的高,该图中只有x个三角形与△ABC相似,则x的值为( )
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848850362368/1816566449201152/STEM/57d381d9d3dc48e38e9de2f478bf30c5.png?resizew=98)
![](https://img.xkw.com/dksih/QBM/2017/8/14/1758848850362368/1816566449201152/STEM/57d381d9d3dc48e38e9de2f478bf30c5.png?resizew=98)
A.1 | B.2 | C.3 | D.4 |
更新时间:2017-11-24 17:08:35
|
【知识点】 几何证明选讲
相似题推荐
单选题
|
较易
(0.85)
【推荐1】如图,在正方形
中,
为
中点,
于
,则
与正方形
的面积比为
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572654780727296/1572654786740224/STEM/e32500e5b92743fbbba33a0a46cdaafe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94aad4c2109f60fcbf5488a545b16c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac23409d18e95b3e5e1c295c23f9041f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41bb04d8579af93bff3f24b720040881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2016/5/30/1572654780727296/1572654786740224/STEM/e32500e5b92743fbbba33a0a46cdaafe.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
较易
(0.85)
【推荐2】如图所示,四边形ABCD是⊙O的内接四边形,延长BC到E,已知∠BCD∶∠ECD=3∶2,那么∠BOD等于
![](https://img.xkw.com/dksih/QBM/2014/3/25/1571575323123712/1571575328088064/STEM/afa16a05f8004ce4a6b9850f31f6b919.png)
![](https://img.xkw.com/dksih/QBM/2014/3/25/1571575323123712/1571575328088064/STEM/afa16a05f8004ce4a6b9850f31f6b919.png)
A.120° | B.136° |
C.144° | D.150° |
您最近一年使用:0次