题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-66018.png)
使
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-25415.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-66018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-13963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-66018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-66018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-51155.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-66018.png)
A.①④ | B.②③ | C.①②③ | D.②③④ |
答案
解析
试题分析:若直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032952-43852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-66018.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032951-25415.png)
核心考点
试题【已知直线a,b异面, ,给出以下命题:①一定存在平行于a的平面使;②一定存在平行于a的平面使∥;③一定存在平行于a的平面使;④一定存在无数个平行于a的平面与b交】;主要考察你对线线角等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032933-14685.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032933-66421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032933-30228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-15303.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-24158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-67566.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-31908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-14656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-57668.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-17239.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-18989.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032935-35632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032935-79906.png)
(2)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032935-94460.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032935-81453.png)
(3)求点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032934-31908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032935-95361.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032935-98468.jpg)
如图1,直角梯形
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032910-53486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032911-53741.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032911-96151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032911-74427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032911-10935.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032911-45374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032912-16853.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032912-72852.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032912-38886.png)
(1) 证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032912-58461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032913-79726.png)
(2) 求三棱锥
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032913-74042.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032913-97978.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032913-33712.png)
图1 图2
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-34502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-92453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-10721.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-69712.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-68427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-60515.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-97268.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-58260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-53456.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-59157.png)
(1)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-58260.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-53456.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032900-44370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032900-52089.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032900-78073.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032859-68427.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032849-37612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032850-68926.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032850-94076.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032850-51158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032850-12834.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032850-31879.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032851-11483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032851-46890.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032850-12834.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032851-86978.png)
A.1 个 B.2 个 C.3 个 D.无穷多个
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022032843-55404.png)
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