如图,已知在多面体ABCDEF中,ABCD为正方形,EF∥平面ABCD,M为FC的中点,AB=2,EF到平面ABCD的距离为2,FC=2.
![](https://img.xkw.com/dksih/QBM/2017/4/21/1670360499290112/1671113010692096/STEM/8c6793a9377a4ea8a726e9bbb2ac9cef.png?resizew=184)
(1)证明:AF∥平面MBD;
(2)若EF=1,求VF﹣MBE.
![](https://img.xkw.com/dksih/QBM/2017/4/21/1670360499290112/1671113010692096/STEM/8c6793a9377a4ea8a726e9bbb2ac9cef.png?resizew=184)
(1)证明:AF∥平面MBD;
(2)若EF=1,求VF﹣MBE.
更新时间:2017-04-22 10:31:02
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【推荐1】如图,在四棱锥
中,
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上的中点.
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(1)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ea1efba56e577f2a289b4be22bbc73.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
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【推荐2】如图,在四棱柱
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【推荐1】由四棱柱
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【推荐2】如图,在三棱柱ABC-A1B1C1中, CC1⊥底面ABC,AC=BC,M,N分别是CC1,AB的中点.
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(1)求证:CN⊥AB1;
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