如图,在四棱锥P﹣ABCD中,PA⊥平面ABCD,底面ABCD为菱形,E为CD的中点.
![](https://img.xkw.com/dksih/QBM/2021/2/5/2651693698686976/2652406380666880/STEM/c0998f9b2fd8455caef1fd68d3e357a3.png?resizew=242)
(1)求证:BD⊥PC;
(2)在棱PB上是否存在点F,使得CF∥平面PAE?若存在描述F的位置并证明,若不存在,说明理由.
![](https://img.xkw.com/dksih/QBM/2021/2/5/2651693698686976/2652406380666880/STEM/c0998f9b2fd8455caef1fd68d3e357a3.png?resizew=242)
(1)求证:BD⊥PC;
(2)在棱PB上是否存在点F,使得CF∥平面PAE?若存在描述F的位置并证明,若不存在,说明理由.
更新时间:2021-02-06 20:37:30
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解答题-证明题
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【推荐1】如图,在直三棱柱
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(1)求证:
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(2)求二面角
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解答题-证明题
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解题方法
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解答题-证明题
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