题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075656-40730.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075656-40730.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075656-57071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075656-29704.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075656-29084.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075657-72476.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075657-75615.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075657-50349.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075657-88481.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075658-89762.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075658-14152.gif)
(Ⅰ)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075658-93376.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075657-72476.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075658-92290.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075659-81655.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075659-82365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075659-94537.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075659-70226.gif)
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075659-77363.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075700-78474.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075700-93021.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075700-31839.gif)
(Ⅱ)在平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075700-87261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075701-87760.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075701-59039.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075701-10097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075701-20215.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075701-19894.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075702-55301.gif)
在
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075702-43973.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075702-81586.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075702-20341.gif)
在
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075703-40588.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075703-22317.gif)
在
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075703-67412.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075703-60292.gif)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075704-41401.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075704-39889.gif)
在
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075704-35908.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075704-81750.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075705-28371.gif)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075705-25670.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075705-85903.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075705-21747.gif)
同理
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075705-17961.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075706-67559.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075706-94112.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075659-70226.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075706-12499.gif)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075644-45800.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075644-82203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075644-86724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075644-65580.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075644-81828.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075645-34523.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075645-29846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075645-93846.png)
(1)当
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075646-27194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075646-63465.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075646-50741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075646-32646.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075639-14849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075639-77201.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075639-29362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075639-90755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075640-81092.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075640-37591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075639-14849.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075640-33667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075640-91284.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075641-11021.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075641-60326.png)
(1)如图,对于任一给定的四面体
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075631-80184.gif)
次排列的四个相互平行的平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075631-90137.gif)
得
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075631-18602.gif)
的距离都相等;
(2)给定依次排列的四个相互平行的平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075631-90137.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075631-80184.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075631-18602.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075631-80184.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075632-58692.gif)
A.66 | B.60 | C.52 | D.44 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075622-52103.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075622-56583.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022075622-23250.gif)
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