题目
题型:不详难度:来源:
①
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032737-92525.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032737-93282.gif)
②
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032737-29824.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032738-62667.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032738-99434.gif)
③
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032738-41522.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032738-17395.gif)
④
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032739-28748.gif)
其中正确结论的序号是___________.
答案
解析
核心考点
试题【一个正方体纸盒展开后如图,在原正方体纸盒中有下列结论:① ;② 与成角;③ 与是异面直线;④ .其中正确结论的序号是___________.】;主要考察你对空间几何体的结构特征等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-29235.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-67852.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-14826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032729-29261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-67852.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032729-29261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032729-36260.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-67852.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-14826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-14826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032729-29261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032729-21598.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-67852.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032728-14826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032729-29261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032729-65875.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032716-89747.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032716-91196.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032716-69634.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032716-76020.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032717-97704.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032717-59116.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032717-42235.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032717-54688.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032718-59946.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032718-70442.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032718-38031.gif)
(1)证明:
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032718-36433.gif)
(2)求二面角
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032718-93699.gif)
(3)求点
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032719-67653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032719-46401.gif)
②若E、F、G分别是BC、AB、CD的中点,则∠FEG的大小等于异面直线AC与BD所成角的大小;
③若四面体ABCD有内切球,则
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032712-83050.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032712-64278.gif)
④若四个面是全等的三角形,则ABCD为正四面体。
其中正确的是: (填上所有正确命题的序号)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032705-90009.gif)
(1) 求证:PB//面ACE;
(2) 求二面角E—AC—D的大小。
①在空间中,过直线外一点只能作一条直线与该直线平行;
②“直线
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-67392.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-96876.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-67392.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-96876.gif)
③“平面
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-96876.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-55101.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-96876.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-55101.gif)
④若
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-36455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-24471.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-67392.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191021/20191021032700-36455.gif)
其中正确命题的个数有 ( )
A.1 | B.2 | C.3 | D.4 |
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