题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085107-70777.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085107-77442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085107-87580.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-52934.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-24664.gif)
平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-59127.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-66068.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-38398.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-47276.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-48548.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-75101.gif)
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答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-98209.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085107-70777.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-85112.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-35577.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085110-32527.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085110-19092.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085110-37012.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-98209.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085110-88285.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085110-67954.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-85112.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085111-27584.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085111-90956.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085111-24352.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085111-94345.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085111-47145.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085112-92150.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085110-67954.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-98209.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-52934.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-85112.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-47276.gif)
(2)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-98209.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-47276.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-52934.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085112-56945.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085112-40114.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-59127.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085112-20778.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085108-59127.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085112-40114.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085113-20361.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085113-72250.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-98209.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085113-81556.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085113-87803.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-98209.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085113-59830.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-85112.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-48548.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085109-75101.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085059-52936.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085059-48008.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085059-80772.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085059-16915.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085100-62315.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085059-52936.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085059-48008.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085059-80772.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085100-96361.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085053-46903.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085053-40735.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085053-45137.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085045-44258.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085045-22506.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085045-54989.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085046-88972.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085046-69239.gif)
求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085046-49813.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085046-14873.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085036-21298.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085036-38864.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085036-77495.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085037-35841.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085037-28560.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085037-95529.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085037-11852.gif)
求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085037-19093.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085038-40172.gif)
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![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085022-40567.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085022-63323.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085022-68963.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085022-43220.gif)
(1) 求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085022-17368.gif)
(2) 设
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085023-36634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085023-25472.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022085023-24511.gif)
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