题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044125-51370.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044125-18391.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044126-41224.gif)
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答案
证明见解析
解析
过点
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044127-72613.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044128-54598.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044128-50835.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044128-65439.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044128-83740.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044129-35569.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044129-55370.gif)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044129-45629.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044129-76277.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044130-39394.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044130-27152.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044130-36473.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044131-35254.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044131-33440.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044128-54598.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044131-15624.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044131-99281.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044132-20879.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044132-18720.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044132-61891.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044117-92959.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044118-16123.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044118-43420.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044118-75554.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044118-51807.gif)
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已知:如图,空间四边形
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044111-68691.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044111-58864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044111-58761.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044112-48741.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044112-67261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044112-35364.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044112-66194.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044102-15334.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044103-61905.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044103-12581.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044103-94340.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044103-29340.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044104-73989.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044104-44190.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044104-48832.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044104-67594.gif)
点
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044105-61136.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044105-20569.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044106-86146.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044052-78362.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044053-97424.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044053-47266.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044053-96631.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044053-23064.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044054-50800.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044052-36455.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044053-80927.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106044044-75166.gif)
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