题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130733-21213.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130733-41312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130733-80595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130733-22928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130734-90759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130733-41312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130734-46856.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130734-44503.png)
解析
试题分析:几何问题的解决一般依赖于图形,作出三棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130733-21213.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130734-68106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130735-67399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130735-67399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130735-25036.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130735-25889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130735-56994.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130736-66814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130736-35008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130736-79393.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130736-72260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130736-35008.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130733-22928.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130736-24040.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130737-91761.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130737-24106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130737-20815.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130734-68106.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130735-67399.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130737-41505.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130736-72260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130737-53384.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130738-13532.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130738-84640.png)
核心考点
举一反三
A.S1=2S2 | B.S1=3S2 | C.S1=4S2 | D.S1=2![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130713-75520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130713-81834.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130705-53670.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130705-45160.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130706-76738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130706-94069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130706-83107.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130707-89831.png)
A.![]() | B.![]() | C.![]() | D.不确定 |
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021130658-64888.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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