题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115259-41332.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115259-46258.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115253-88370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115253-20735.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115253-74957.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115249-25097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115250-79727.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115238-45888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115238-54650.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115238-26288.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115238-36215.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115238-48440.png)
(1)求证:对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115239-11342.png)
(2)若二面角C-AE-D的大小为
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115239-16600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115239-77223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115239-77605.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115218-49494.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115219-18086.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115219-67564.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115219-99085.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115220-18538.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115220-77411.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115220-57639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115220-85695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-72127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-61113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-87614.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-53702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115222-62272.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115222-20059.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115222-69104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115220-85695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-72127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-87614.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-53702.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115223-54051.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115223-27468.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115220-57639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115222-69104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115223-59067.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115221-72127.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115223-82628.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115224-15719.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115224-51375.png)
(2)求四棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115224-42600.png)
(3)求平面
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115224-88607.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115225-16033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115225-30964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115207-47141.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115207-52353.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115207-34411.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115208-21987.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115208-73877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115208-38472.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115208-13549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115208-10432.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115209-63875.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115209-19377.png)
(1)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115209-31274.png)
(2)求面
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115209-49022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115210-89159.png)
(3)在线段
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115210-44204.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115210-82632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115211-94288.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115209-49022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115210-82632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105115211-13973.png)
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