题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-47452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034843-40329.png)
①若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-47452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-47452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-47452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-47452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034843-40329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034843-40329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
④若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034843-40329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034843-40329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-53983.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034842-36889.png)
A.①② | B.②③ | C.①④ | D.③④ |
答案
解析
试题分析:平行有传递性,公理四:平行于同一条直线的两条直线平行,故①正确;垂直于同一条直线的两条直线的位置关系为平行,异面,相交都用可能,故②不正确;平行于同一个平面的两条直线的位置关系为平行,相交,异面,故③不正确;垂直于同一个平面的两条直线平行,故④正确.故选C.
核心考点
试题【用、、表示三条不同的直线,表示平面,给出下列命题:①若∥,∥,则∥; ②若⊥,⊥,则⊥;③若∥,∥,则∥;④若⊥,⊥,则∥.其中正确命题的序号是( )A】;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/20191022/20191022034833-45287.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034833-16102.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034833-23418.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034833-28921.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034834-32422.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034834-57480.jpg)
(1)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034834-26630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034834-58336.png)
(2)求证:平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034834-58336.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034835-65828.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034835-86222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034835-83170.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034835-65866.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034815-72672.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034815-17229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034815-73258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034815-54876.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034815-59228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034816-13232.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034816-41048.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034816-85554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034815-73258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034816-30403.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034817-94095.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034817-47674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034817-69444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034817-71289.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034818-89293.png)
(1)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034818-87974.png)
(2)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034818-57360.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034745-18270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034745-15977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034746-52647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034745-15977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034746-71561.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034746-45358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034746-75292.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034746-40348.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-65263.jpg)
(1)记平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-83792.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-18551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-22975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-22975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034748-95311.png)
(2)设(1)中的直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-22975.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034745-15977.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034748-17851.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034748-51817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034748-33800.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034749-81877.png)
平面
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-18551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034749-35511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034749-81877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034749-33569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034749-17758.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034749-58697.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034750-99941.png)
①求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034750-78552.png)
②当点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034746-52647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034745-18270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034750-69015.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034750-42496.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034747-83792.png)
A.平行 | B.相交 | C.异面 | D.以上都有可能 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034736-86392.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022034736-97514.png)
A.若![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() |
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