题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011437-46686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011437-71775.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011437-22283.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011437-45964.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011438-44884.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011437-71775.gif)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011438-71941.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011438-20896.gif)
解析
核心考点
举一反三
一个几何体是由圆柱
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011417-38520.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011418-24488.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011418-65813.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011418-42238.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011418-25995.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011418-21623.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011419-62315.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011419-60296.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011419-23775.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011419-55786.gif)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011419-81024.gif)
(2)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011419-53809.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011419-47767.gif)
如图8,在直角梯形
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011357-65164.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-48296.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-95339.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-56573.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-45104.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-46628.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-45104.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-46628.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-46628.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011357-65164.gif)
(1)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-91431.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-67373.gif)
(2)求平面
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011357-65164.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011358-78947.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011359-50809.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011340-55367.jpg)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011340-65841.gif)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011340-90291.gif)
(3)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011341-48853.gif)
(4)求CB1与平面A1ABB1所成的角的余弦值.
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011333-15059.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011333-88260.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011333-93207.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011333-24135.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011334-49957.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011334-10621.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011334-13860.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
四、附加题:本大题共2小题,每小题10分,共20分。
(20)(本小题满分10分)
已知
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011322-99862.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011323-31962.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011323-62340.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011323-16409.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011324-48111.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011324-38712.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011324-37518.gif)
(I)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011324-95297.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011325-79586.gif)
(II)设
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011325-99995.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011325-62936.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011326-63341.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011326-64504.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011326-26807.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191106/20191106011326-64504.gif)
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