1 . 如图,在直四棱柱ABCD-A
B
C
D
中,底面ABCD为等腰梯形,AB//CD,AB=4,BC=CD=2,AA
=2, E、E
分别是棱AD、AA
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/03ef7c76-a05b-4f34-91f6-cf70c50c1947.png?resizew=207)
(1)设F是棱AB的中点,证明:直线EE
//平面FCC
;
(2)证明:平面D1AC⊥平面BB1C1C.
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/03ef7c76-a05b-4f34-91f6-cf70c50c1947.png?resizew=207)
(1)设F是棱AB的中点,证明:直线EE
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152857088/STEM/64c30cd9932b41eeb2373ef671a359ab.png)
(2)证明:平面D1AC⊥平面BB1C1C.
您最近一年使用:0次
2016-11-30更新
|
2152次组卷
|
8卷引用:新疆昌吉市第一中学2022-2023学年高一下学期5月月考数学试题
新疆昌吉市第一中学2022-2023学年高一下学期5月月考数学试题2009年普通高等学校招生全国统一考试文科数学(山东卷)(已下线)2011届广东省湛江一中高三上学期10月月考文科数学卷(已下线)2011届江西省上饶县中学高三第四次月考数学文卷第二章 应用·拓展·综合训练(二)云南省昆明市寻甸县民族中学2019-2020学年高一下学期第一次月考数学试题广东省佛山市顺德区高中联盟2019-2020学年高二上学期第一次联考数学试题新疆乌鲁木齐市第四中学2021-2022学年高一下学期期末考试数学试题