解答题-证明题 适中0.64 引用1 组卷773
如图,在四棱锥
中,四边形
是平行四边形,![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/7dbbb1a1e584495abb30d5ef9f1b124a.png)
,点E是
的中点.
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/11c6c476c45946fd82f3ccc228ee7108.png)
(1)求证:
∥平面
;
(2)求证:平面
平面
.
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/7dbbb1a1e584495abb30d5ef9f1b124a.png)
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/a7232057e0dc4a4ea19e5b66dbccc289.png)
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/12910bbf450c48e6a02e700dccc6af7f.png)
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/11c6c476c45946fd82f3ccc228ee7108.png)
(1)求证:
(2)求证:平面
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/2cec4a38062c4407a212e7be6a2e9012.png)
![](https://img.xkw.com/dksih/QBM/2015/1/28/1571971671203840/1571971676758016/STEM/13b4d9b11ce049faa460743f1bb9527f.png)
14-15高二上·甘肃天水·阶段练习
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