如图,在四棱锥
中,底面
为正方形,
底面
,
,过点
的平面与棱
,
,
分别交于点
,
,
(
,
,
三点均不在棱的端点处).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/2bf2ebb3-c6bd-4cda-ba06-e09ba32f1ab8.png?resizew=210)
(1)求证:平面
平面
;
(2)若
平面
,求
的值;
(3)直线
是否可能与平面
平行?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587df01a98f499a9f361aafd8c3dac39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/10/2bf2ebb3-c6bd-4cda-ba06-e09ba32f1ab8.png?resizew=210)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8d0e8404f347a0eb4c76f4d25d9bdac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/243fcd0b5e7fc1a4d55e191f5fcbd332.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
2017·北京西城·一模 查看更多[4]
2017届北京市西城区高三一模文科数学试卷2017届北京市西城区高三4月统一测试(一模)文数试卷【全国百强校】湖北省宜昌市第一中学2017-2018学年高一下学期期末考试数学(文)试题(已下线)8.6.3平面与平面垂直 (第2课时) -【上好课】(人教A版2019必修第二册)
更新时间:2017-04-11 10:13:18
|
相似题推荐
解答题-证明题
|
适中
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解题方法
【推荐1】如图,在底面为平行四边形的四棱锥P-ABCD中,AB⊥AC,PA⊥平面ABCD,点E是PD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/f4e25759-3d03-4389-8a0b-891064cbd105.png?resizew=172)
(1)求证:AC⊥PB;
(2)求证:PB∥平面AEC.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/f4e25759-3d03-4389-8a0b-891064cbd105.png?resizew=172)
(1)求证:AC⊥PB;
(2)求证:PB∥平面AEC.
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【推荐2】如图所示,正方体
的棱长是2,E、F分别是线段AB、
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/d1030ec8-4459-45ed-8f3c-91533f5663d2.png?resizew=151)
(1)证明:
平面
;
(2)求
点到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/d1030ec8-4459-45ed-8f3c-91533f5663d2.png?resizew=151)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4755dc59cb5a03cd39879bc80fdbb9.png)
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【推荐1】如图,正方形
所在平面与
所在平面互相垂直,
,设平面
与平面
相交于直线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/12e3d3c7-c57e-4cb0-a439-78a2e817864a.png?resizew=139)
(1)求
与
所成角的大小;
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9681f9d187e18d23f604499a23727daf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b405a122ded2eb0395d5434892ae7b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/26/12e3d3c7-c57e-4cb0-a439-78a2e817864a.png?resizew=139)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
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【推荐2】如图1,已知直角梯形ABCD中,
,AB//DC,AB⊥AD,E为CD的中点,沿AE把△DAE折起到△PAE的位置(D折后变为P),使得PB=2,如图2.
(Ⅰ)求证:平面PAE⊥平面ABCE;
(Ⅱ)求点B到平面PCE的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c313dff515240bc75d42f6687ac44cb1.png)
(Ⅰ)求证:平面PAE⊥平面ABCE;
(Ⅱ)求点B到平面PCE的距离.
![](https://img.xkw.com/dksih/QBM/2018/3/2/1893329533927424/1895760624336896/STEM/b0e8fccc0f3a4687b66eedfe07cfd53e.png?resizew=281)
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解答题-证明题
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(0.65)
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【推荐1】如图,在三棱柱
中,
,
,
平面
.
![](https://img.xkw.com/dksih/QBM/2021/5/29/2731292187451392/2732289561452544/STEM/9c3c1ad5d84444959d18a8ee4b1cee0d.png?resizew=217)
(1)求证:
;
(2)若
,直线AB与平面
所成角为30°,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e5a6afab22d5b53c1d8e87d58e8020.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9778ae9823e8430d73d87c57fc47b185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ce03b310edce42191f9fa75a1c909ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://img.xkw.com/dksih/QBM/2021/5/29/2731292187451392/2732289561452544/STEM/9c3c1ad5d84444959d18a8ee4b1cee0d.png?resizew=217)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7870cee007535b979d35bc7feab75616.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/900e00a3609e6043af1034761d4d65f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170f0db8cce8bd324ff54a05aeb4b96a.png)
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解答题-问答题
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适中
(0.65)
解题方法
【推荐2】在三棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188b56a6496e420b22277b6334ad5755.png)
![](https://img.xkw.com/dksih/QBM/2012/1/3/1570675265396736/1570675270844416/STEM/0408ceea6aa14717a801d75c441884dd.png?resizew=183)
(1)证明:
;
(2)求三棱锥的体积
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188b56a6496e420b22277b6334ad5755.png)
![](https://img.xkw.com/dksih/QBM/2012/1/3/1570675265396736/1570675270844416/STEM/0408ceea6aa14717a801d75c441884dd.png?resizew=183)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1431be7a752a3a1314c9b95cd5003495.png)
(2)求三棱锥的体积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3a519282f29540940bf80b146b21c4.png)
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