题目
题型:不详难度:来源:
A.{α|40°<α<50°} | B.{α|0°<α<40°} |
C.{α|40°<α<90°} | D.{α|50°<α<90°} |
答案
解析
核心考点
试题【(理科) 异面直线a,b成80°角,P为a,b外的一个定点,若过P有且仅有2条直线与a,b所成的角相等且等于α,则角α属于集合( )A.{α|40°<α】;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/20191022/20191022013951-40313.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013951-18292.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013952-29063.gif)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013952-23126.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013952-78089.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013952-14242.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013952-66374.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013945-32067.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013946-77824.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013946-86667.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013946-92981.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013946-65284.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013946-94175.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013947-98288.gif)
(1) 设F是棱AB的中点,证明:直线E
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013946-86667.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013947-61368.gif)
(2
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013947-37144.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022013938-58362.gif)
A.相交 | B.异面 | C.![]() | D.异面或相交 |
中,异面直线AA’与BC所成的角是( )
A.300 | B.450 | C.600 | D.900 |