题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175705-91058.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-20226.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-69966.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-72402.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-99767.gif)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-45669.gif)
则联立
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-78480.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-72402.gif)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175707-12077.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175707-95061.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-20226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175707-68229.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175707-50605.gif)
代入直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175705-91058.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-69966.gif)
(2)设圆方程为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175708-75066.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175708-99758.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175708-79204.gif)
所以圆方程为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175706-99767.gif)
核心考点
试题【已知:△ABC中,顶点A(2,2),边AB上的中线CD所在直线的方程是,边AC上的高BE所在直线的方程是.(1)求点B、C的坐标; (2)求△ABC的外接圆的】;主要考察你对直线方程的几种形式等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175700-89647.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175701-20727.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175701-90812.gif)
A.8 | B.-8 | C.![]() | D.![]() |
直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175656-25803.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175656-63738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175656-41220.png)
A.![]() | B.![]() ![]() | C.0 | D.-2或0 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175649-21349.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175649-21349.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175638-30515.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175638-91485.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175639-62093.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175639-73427.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175639-97622.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175639-23475.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175640-58930.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175635-41644.gif)
则下列两条直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022175635-90091.gif)
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