题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071035-17909.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071035-46580.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071036-16339.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071036-33507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071036-37751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071036-98025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071037-91782.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071037-69125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071037-57329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071037-18569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071038-84714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071038-56738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071038-83617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071038-21682.png)
答案
解析
![]() |
易证
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071039-32798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071039-30981.png)
点E到平面ABC的距离为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071039-53803.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071037-18569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071039-21778.png)
故选D
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071028-16548.png)
A.A![]() ![]() ![]() | B.A![]() ![]() ![]() |
C.A![]() ![]() ![]() | D.A![]() ![]() ![]() |
(1)平行于同一条直线的两条直线平行;
(2)平行于同一条直线的两个平面平行;
(3)平行于同一平面的两条直线平行;
(4)平行于同一平面的两个平面平行;
A.1 | B.2 | C.3 | D.4 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071017-56410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071017-56410.png)
A.a⊥b且a与b相交 | B.a⊥b且a与b不相交 |
C.a⊥b | D.a 与b不一定垂直 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071013-29707.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071013-28724.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071013-14377.png)
A.![]() | B.45° | C.![]() | D.90° |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071013-66333.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071004-40155.png)
A、若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071004-86062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071004-29624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071005-45609.png)
B、若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071005-22208.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071005-52839.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071005-45609.png)
C、若点A、B不在直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071005-84908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071005-84908.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071005-84879.png)
D、若三条直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071004-40155.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022071004-40155.png)
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