解题方法
1 . 如图,在四棱锥
中,
,
,
,
,
平面
,过点
作平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/bc3b62e3-01c1-4677-af11-92bf09b148e5.png?resizew=164)
(1)证明:平面
平面
;
(2)已知点F为棱
的中点,若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80c753cb1eb73fd8d136d00462970797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9136fc1351a6a70eaae89c17957ed39b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed04b01505bbd8a4ac0bc12e46f23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f96c6da9fd69659e549398fe79a2b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/bc3b62e3-01c1-4677-af11-92bf09b148e5.png?resizew=164)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/414844edd458857bdfc80bffa61cbf9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
(2)已知点F为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f713da7dce54965bbef060ad2b507e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128c69eb81dae89c6989d06d20925ad2.png)
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|
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4卷引用:福建省部分地市2024届高三上学期期末数学试题
名校
解题方法
2 . 在正方体中,
,点
平面
,点F是线段
的中点,若
,则当
的面积取得最小值时,
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5卷引用:广东省肇庆市2023-2024学年高二上学期期末教学质量检测数学试题
名校
解题方法
3 . 如图,在棱长为
的正方体
中,点
是正方体的中心,将四棱锥
绕直线
逆时针旋转
后,得到四棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/70eaf1d9-40ba-4fe0-a96f-0af246dc88a1.png?resizew=269)
(1)若
,求证:平面
平面
;
(2)是否存在
,使得直线
平面
,若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a0c3a4e61b97fa9bc58f3179fc2958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debc6eb7acc1f38ef267ce976bc08891.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf80148409afb32ced0b4f59f1ba709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa19f78fd19c8e5601bba0f52e438ca6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72df364fb19388f4a9f691fb04e6851.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/70eaf1d9-40ba-4fe0-a96f-0af246dc88a1.png?resizew=269)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1676b17f3641daf630f709517d22d120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e238b13232095d5859e5a622d09233d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715c368ff97dfe2f168c15bc6a3fe9a3.png)
(2)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f3fdee3ca530bf2fe6583112972e63a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2730b513bd3359c3dfe6567e04f5ef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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|
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4卷引用:广东省华附 深中 省实 广雅四校联考2024届高三上学期期末数学试题
广东省华附 深中 省实 广雅四校联考2024届高三上学期期末数学试题(已下线)最新模拟重组精华卷2 -模块一 各地期末考试精选汇编湖南省长沙市雅礼中学2024届高三下学期3月综合测试(一)数学试题(已下线)第七章 应用空间向量解立体几何问题拓展 专题二 平面法向量求法及其应用 微点1 平面法向量求法及其应用(一)【培优版】
名校
解题方法
4 . 已知正四面体
的棱长为3,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
A.若点![]() ![]() ![]() ![]() ![]() |
B.在正四面体![]() ![]() |
C.若正四面体![]() ![]() |
D.点![]() ![]() ![]() ![]() ![]() |
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解题方法
5 . 已知和两条异面直线都垂直相交的直线叫做两条异面直线的公垂线,公垂线与两条直线相交的点所形成的线段,叫做这两条异面直线的公垂线段.两条异面直线的公垂线段的长度,叫做这两条异面直线的距离.如图,在棱长为1的正方体
中,点
在
上,且
;点
在
上,且
.则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/1db74639-949f-4d10-85c5-93e000301825.png?resizew=178)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9df8d320bee31b074de41d98a662f9a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73021f964178d175673b6ff9fe2b8e0c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/1db74639-949f-4d10-85c5-93e000301825.png?resizew=178)
A.线段![]() ![]() ![]() |
B.异面直线![]() ![]() ![]() |
C.点![]() ![]() ![]() |
D.点![]() ![]() ![]() |
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2卷引用:贵州省贵阳市2023-2024学年高二上学期期末考试数学试卷
6 . 在三棱锥
中,
平面
,
,
是底面
上(含边界)的一个动点,
是三棱锥
的外接球
表面上的一个动点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df424b9f2699c537962aab7659b5b715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.当![]() ![]() ![]() |
B.![]() |
C.当![]() ![]() ![]() ![]() |
D.存在点![]() ![]() ![]() ![]() |
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名校
解题方法
7 . 如图,在长方体
中,
,
,
,
分别是棱
和
上的两个动点,且
,则
的中点
到
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db57eca2a7cbd91bc57372592580a76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4d14c6959273338a048b023805cce80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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3卷引用:北京市昌平区2023-2024学年高二上学期期末质量抽测数学试题
8 . 如图,在多面体
中,四边形
是正方形,
,
,M是
的中点.
平面
;
(2)若
平面
,
,
,点P为线段
上一点,求直线
与平面
所成角的正弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d87e08d8444dc7c5a8cb16cea70efe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d550d73a827da587dffcb52e554affe4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6453d99098891728c55e2006307179d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8d2d217e9bcd059908f117dfc4d4259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56387ff53874620addcb0b91a605a309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d18e66f7066a1fdf2cb167a4862128c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
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2卷引用:广东省广州市越秀区2023-2024学年高二上学期期末考试数学试卷
名校
9 . 如图,在棱长为6的正方体
中,动点P在截面
内(含边界),且满足
.下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/44fc13b7-0717-4f7a-87a1-bb6c9541522f.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3765296ff6363e6a2321d236dbae5da4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/44fc13b7-0717-4f7a-87a1-bb6c9541522f.png?resizew=157)
A.点P的轨迹长度为![]() |
B.![]() ![]() ![]() |
C.存在点P使得![]() |
D.![]() ![]() ![]() |
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名校
解题方法
10 . 如图,在直四棱柱
中,
,
,点
在以线段
为直径的圆
上运动,且
三点共线,点
分别是线段
的中点,下列说法中正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/095d946e-7337-48be-b0cd-5316e48dc72f.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c14a66ed4bd66df65bc42c4ac1ed15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb21011ea821b91d539cb763aac649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bebda859049666cad4f183c43a7c1a30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/067d7b8fd6a5f6fa75843708fed6459f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/095d946e-7337-48be-b0cd-5316e48dc72f.png?resizew=133)
A.存在点![]() ![]() ![]() |
B.当直四棱柱![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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