题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073729-68248.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073729-72782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-10108.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-92097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073729-72782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-79547.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-46412.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-65893.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073731-52444.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073731-48792.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073731-66842.gif)
(Ⅰ)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073731-82389.gif)
(Ⅱ)求多面体
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073732-70920.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073732-63444.jpg)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073732-59223.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073732-98954.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-40051.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-47381.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073729-68248.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-36038.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073731-48792.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073734-61711.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-47381.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073729-72782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073734-90743.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-47381.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-10108.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-92097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073729-72782.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073734-60041.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-92097.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-10108.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073734-86470.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073734-74380.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073735-43082.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073735-51372.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-47381.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073735-27710.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073730-65893.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073731-52444.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073735-84487.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073735-45405.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073736-86365.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073736-54470.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073736-13653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073733-33857.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073731-82389.gif)
(Ⅱ).
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073736-59148.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073737-54579.gif)
………………………………………………14分
解析
核心考点
举一反三
如图,在四棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073721-75806.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073721-75390.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073721-53099.gif)
底面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073721-53099.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073722-43425.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073722-36408.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073722-32325.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073722-23140.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073722-77748.gif)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073723-33411.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073723-24860.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073713-61628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073714-77962.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073710-11373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073710-73255.png)
两条直线的位置关系 ( )
A.必定相交 | B.平行 | C.必定异面 | D.不可能平行 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073702-38521.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073702-35300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-23632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-20857.png)
得到的几何体,其中
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-27553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-42442.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-47280.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-65023.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-87447.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-47280.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073703-58777.png)
A.![]() | B.四边形![]() |
C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073704-89602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073655-38480.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073655-11371.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073656-63031.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073656-55166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073656-57763.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073656-89661.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073657-18174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073657-41535.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073657-18174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073656-89661.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073657-15712.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073657-35044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073658-92445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073658-71654.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073658-92445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022073657-35044.png)
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