题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225624-84349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225624-85386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225624-40540.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225625-45594.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225625-25848.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225625-34148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225625-19249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225626-75318.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225627-70034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225627-70034.png)
故选A.
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225612-38889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225612-95893.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225612-71048.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225613-31801.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225614-10304.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225614-28502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225614-81658.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225615-81319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225615-94019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225615-75309.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225615-40927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225612-71048.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225615-37582.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225614-28502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225616-13612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225616-47754.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225604-85571.jpg)
(1)求证:AB=AC;(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225605-66084.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225605-26923.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225605-31466.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225552-61096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225552-13233.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225552-21738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225552-53851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225553-23151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225553-95365.png)
(1)求点
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225553-93968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225553-24672.png)
(2)若点
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225554-41300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225554-95196.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225554-35267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225555-48590.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225555-10680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225555-99035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225554-41300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225555-64570.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225555-99035.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225555-64570.png)
(3)在(2)的条件下,是否存在点
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225554-41300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225556-80691.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225556-98908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225554-41300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225539-20005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225540-94038.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225540-60394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102225533-12193.png)
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