名校
1 . 如图,菱形ABCD与等边△PAD所在的平面相互垂直,AD=2,∠DAB=60°.
(1)证明:AD⊥PB;
(1)证明:AD⊥PB;
求三棱锥C﹣PAB的高.
![](https://img.xkw.com/dksih/QBM/2017/12/25/1846039824539648/1850879698485248/STEM/77b23a4ee3954eb1aa6f41c91a667741.png?resizew=197)
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2 . 在四棱锥S-ABCD中,底面ABCD为菱形,SD⊥平面ABCD,点E为SD的中点.
(1)求证:直线SB∥平面ACE
(2)求证:直线AC⊥平面SBD.
(1)求证:直线SB∥平面ACE
(2)求证:直线AC⊥平面SBD.
![](https://img.xkw.com/dksih/QBM/2017/10/9/1796612360372224/1807379033276416/STEM/3a3c2eba7f00426eae31e7350f2ab1a6.png?resizew=232)
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3 . 在棱锥
中,底面ABCD为菱形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8808d4e8613de5399b4a669a29644e63.png)
(1)若E为SD的中点,求证:直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a4d782b2777851f470b06b2774542d.png)
(2)求证:直线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f543e8c01d7da4a1fed7487ceec159cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a5ed6e9c8b538785b152070d9de7612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8808d4e8613de5399b4a669a29644e63.png)
(1)若E为SD的中点,求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a4d782b2777851f470b06b2774542d.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f543e8c01d7da4a1fed7487ceec159cd.png)
![](https://img.xkw.com/dksih/QBM/2017/10/9/1796612361936896/1807813377187840/STEM/a99f75c191924474a2f2f9550fcced41.png?resizew=219)
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4 . 如图,已知棱柱
中,底面
是平行四边形,侧棱
底面
,
.
![](https://img.xkw.com/dksih/QBM/2017/5/8/1682702602084352/1684516673716224/STEM/bd9b5c01c593493c886e2b349ee68d51.png?resizew=235)
(1)求证:
平面
;
(2)求二面角
的平面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a51471ddc72972cdce9ae16748dd54f.png)
![](https://img.xkw.com/dksih/QBM/2017/5/8/1682702602084352/1684516673716224/STEM/bd9b5c01c593493c886e2b349ee68d51.png?resizew=235)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d027be176d18651cfd30f5492789ba.png)
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2017-05-11更新
|
349次组卷
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3卷引用:贵州省贵阳市2017年高三适应性考试(二)理科数学试题
5 . 如图,三棱柱ABC—A1B1C1的侧面AA1B1B为正方形,侧面BB1C1C为菱形,∠CBB1=60°,AB⊥B1C.
(1)求证:平面AA1B1B⊥平面BB1C1C;
(2)若AB=2,求三棱柱ABC—A1B1C1的体积.
(1)求证:平面AA1B1B⊥平面BB1C1C;
(2)若AB=2,求三棱柱ABC—A1B1C1的体积.
![](https://img.xkw.com/dksih/QBM/2014/5/20/1571731454509056/1571731460112384/STEM/b67fbabac1af46fcb426f291a9071c90.png)
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2016-12-03更新
|
476次组卷
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3卷引用:2017-2018学年贵州省遵义市航天高级中学高三(上)10月月考数学试卷(文科)
名校
6 . 如图,已知
平面
,四边形
为矩形,四边形
为直角梯形,
,
,
,
.
(1)求证:
平面
;
(2)求证:
平面
.
(3)求三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dde327febef2331a4766a79b433cc02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9823d3daa8b68d02aaf19405c5788569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99dfe4b6028cd0a29953bbb50c5a33b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d46554105150391e671609fc6348a18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(3)求三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/199098479c92e87304b91871172d46e0.png)
![](https://img.xkw.com/dksih/QBM/2017/2/27/1632891936669696/1634762069180416/STEM/816bfd1e11194246ae80bd7a63de5504.png?resizew=190)
您最近一年使用:0次
2016-12-04更新
|
399次组卷
|
4卷引用:贵州省遵义市第四中学2017届高三下学期第一次月考(文)数学试题