题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213453-82945.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213453-74160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213453-98216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213454-13009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213454-46174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213454-55096.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213454-91181.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213455-69398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213455-28824.jpg)
答案
解析
试题分析:根据
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213455-79927.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213456-60806.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213456-99187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213456-49103.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213457-95459.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213444-80894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213444-51504.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213444-59393.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213445-27144.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213445-22359.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213445-10334.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213445-35926.png)
(1)求证:△
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213445-14194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213445-88312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213446-56319.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213446-22499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213446-94931.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213426-92277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213426-88420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213427-37833.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213427-49227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213427-98979.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213427-51460.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213426-92277.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213428-95816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213426-88420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213428-67606.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213428-68665.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213428-57756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213427-49227.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213427-98979.png)
(2)如果点
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213429-65460.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213429-70621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213429-55190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213429-65460.png)
(3)如果点
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213430-35700.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213426-88420.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213430-31209.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213430-92052.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213430-66280.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213416-55725.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213416-83440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213416-58008.png)
图1
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213416-36515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213417-69446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213417-69446.png)
(2)如图2,对角线AC、BD的交点记作O,直线OF交线段CE于点G,求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213417-46450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213417-23926.png)
图2
(3)在(2)的条件下,当
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213417-80340.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213417-69446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213411-98644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102213407-78342.png)
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