解题方法
1 . 如图;在梯形
中,
为
的中点;
为
的中点,沿
将三角形
折起
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/690b2c0f-b00d-4985-aded-cda78f265bdb.png?resizew=426)
(1)证明:在折起过程中,平面
平面
,
(2)当折起到平面
平面
时,求二面角
的余弦值,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96814b308d6d0e93de03e68e6f984db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/690b2c0f-b00d-4985-aded-cda78f265bdb.png?resizew=426)
(1)证明:在折起过程中,平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f3e3f310f6ec3f3a26498e7ee17a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)当折起到平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1d76403bac26df50d934d93586f8a11.png)
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3卷引用:河南省新乡市部分高中联考2020-2021学年高三下学期理科数学试题
2021高三·江苏·专题练习
2 . 如图,在圆柱W中,点O1、O2分别为上、下底面的圆心,平面MNFE是轴截面,点H在上底面圆周上(异于N、F),点G为下底面圆弧ME的中点,点H与点G在平面MNFE的同侧,圆柱W的底面半径为1,高为2.
![](https://img.xkw.com/dksih/QBM/2021/4/5/2693511990730752/2693832105426944/STEM/f84b6428d5eb41b18217bbce62d7ebf9.png?resizew=151)
(1)若平面FNH⊥平面NHG,证明:NG⊥FH;
(2)若直线NH与平面NFG所成线面角α的正弦值等于
,证明:平面NHG与平面MNFE所成锐二面角的平面角大于
.
![](https://img.xkw.com/dksih/QBM/2021/4/5/2693511990730752/2693832105426944/STEM/f84b6428d5eb41b18217bbce62d7ebf9.png?resizew=151)
(1)若平面FNH⊥平面NHG,证明:NG⊥FH;
(2)若直线NH与平面NFG所成线面角α的正弦值等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83303d3784492506fc44f2b4d6b07bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
您最近一年使用:0次
2021高三·全国·专题练习
名校
3 . 已知矩形
中,点
是边
上的点,
与
相交于点
,且
,
,
,现将
沿
折起,点
的位置记为
,此时
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/066ab8a8-785a-4e9f-9ccc-c37e4623e7b6.png?resizew=292)
(1)求证:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348fb71fbc47fd87e9ce011652ef4186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac451db3443cabb204f96c31fd4a02e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b3bd5e6bc2a0a277d279bb01af9584.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2030e95242c1bd09fb69969eaf9410d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/12/066ab8a8-785a-4e9f-9ccc-c37e4623e7b6.png?resizew=292)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6040972941f2b83d1ea8c60beeaecf2b.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d7f66b146fccec50efa1c316aa1afe0.png)
您最近一年使用:0次
名校
解题方法
4 . 如图1,矩形ABCD中,
,将矩形ABCD折起,使点A与点C重合,折痕为EF,连接AF、CE,以AF和EF为折痕,将四边形ABFE折起,使点B落在线段FC上,将
向上折起,使平面DEC⊥平面FEC,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/3ce024cf-8a93-4a2d-87e6-5f9dd284a5d2.png?resizew=332)
(1)证明:平面ABE⊥平面EFC;
(2)连接BE、BD,求锐二面角A-BE-D的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff7c2b0b38b384699cac4df6e04cc6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631f45bc652539853f236952afa5bbf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/3ce024cf-8a93-4a2d-87e6-5f9dd284a5d2.png?resizew=332)
(1)证明:平面ABE⊥平面EFC;
(2)连接BE、BD,求锐二面角A-BE-D的正弦值.
您最近一年使用:0次
2021-04-01更新
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1344次组卷
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7卷引用:广西名校2021届高三上学期第一次高考模拟数学理科试题
广西名校2021届高三上学期第一次高考模拟数学理科试题八省市2021届高三新高考统一适应性考试江苏省无锡市天一中学考前热身模拟数学试题(二)(已下线)专题29 空间向量与立体几何(解答题)-2021年高考数学二轮复习热点题型精选精练(新高考地区专用)(已下线)专题31 空间向量与立体几何(解答题)-2021年高考数学(理)二轮复习热点题型精选精练湖南省长沙市长郡中学2021届高三下学期月考(七)数学试题(已下线)专题07 立体几何中的向量方法-备战2021届高考数学(理)二轮复习题型专练?(通用版)(已下线)2021年高考数学押题预测卷(江苏专用)03
名校
5 . 在棱长为
的正方体
中,
是线段
上的点,过
的平面
与直线
垂直,当
在线段
上运动时,平面
截正方体
所得的截面面积的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-03-29更新
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9卷引用:北京市朝阳区2021届高三一模数学试题
北京市朝阳区2021届高三一模数学试题(已下线)专题4.3 立体几何的动态问题-玩转压轴题,进军满分之2021高考数学选择题填空题(已下线)考点突破11 空间向量与立体几何-备战2022年高考数学一轮复习培优提升精炼(新高考地区专用)(已下线)专题8-2 立体几何截面问题的十种题型-2022年高考数学毕业班二轮热点题型归纳与变式演练(全国通用)(已下线)专题23 立体几何中的压轴小题-1北京卷专题19B空间向量与立体几何(选择填空题)北京市北京理工大学附属中学2023~2024学年高三下学期(寒假回归)开学考试数学试题吉林省通化市辉南县第六中学2022-2023学年高二上学期第一次月考数学试题(已下线)专题01 空间向量与立体几何(6)
名校
6 . 如图,在四边形
中,
,
,
,
.沿
将
翻折到
的位置,使得
.
![](https://img.xkw.com/dksih/QBM/2021/3/17/2680006856818688/2680740632330240/STEM/1708d28a-07a7-47fb-97b0-e823b217b9cd.png?resizew=390)
(1)作出平面
与平面
的交线
,并证明
平面
;
(2)点
是棱
于异于
,
的一点,连接
,当二面角
的余弦值为
,求此时三棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6992cf6aa556bf6e61f098ee75f2de66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3185a8075eea774ea1c6298fd1d0f5af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45024b1f1c50249cc194e8689ec01cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfc9df9c661bd93b3f4f51f91534c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffbcd82b98a9ae69aa4ee28bb49a907.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b58b903ad187eea918bcfefb72b2cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c1f150feb5c41ba8cf350d4a8ca057.png)
![](https://img.xkw.com/dksih/QBM/2021/3/17/2680006856818688/2680740632330240/STEM/1708d28a-07a7-47fb-97b0-e823b217b9cd.png?resizew=390)
(1)作出平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef796b46e68fe77b117ff0483d2370c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2a52f691259e1a747d356f631c3d3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6aed3f73929a7c6917bd36996d10ad.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b4e098c6194f55462b24f552f5967.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1145c162038df3c7184d9201c628e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a4ccef06bd7c89746239123517347c3.png)
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2021-03-18更新
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10卷引用:广东省肇庆市2021届高三二模数学试题
广东省肇庆市2021届高三二模数学试题(已下线)专题1.7 空间向量与立体几何-2021年高考数学解答题挑战满分专项训练(新高考地区专用)河南省实验中学2021届高三下学期第四次模拟考试理科数学试题(已下线)解密15 空间向量与立体几何(分层训练)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练湖南省长沙市雅礼中学2022届高三下学期一模数学试题四川省南充市南充高级中学2023届高三上学期第三次质量检测理科数学试题湖南省长沙市雅礼中学2021-2022学年高三下学期月考数学试题(八)江苏省南京市第一中学2021-2022学年高二下学期5月阶段性检测数学试题安徽省芜湖市第一中学2022-2023学年高二上学期第一次阶段性诊断测试数学试题四川省峨眉第二中学校2022-2023学年高二上学期期中考试理科数学试题
名校
解题方法
7 . 如图,在平面四边形ABCD中,AB=AD,BC=CD=
,且BC
CD,以BD为折痕把
ABD和
CBD向上折起,使点A到达点E的位置,点C到达点F的位置(E,F不重合).
![](https://img.xkw.com/dksih/QBM/2021/3/8/2673297535344640/2674051043975168/STEM/40457bd3-8d09-49ec-9f90-f408c814399c.png)
(1)求证:EF
BD;
(2)若平面EBD
平面FBD,点E在平面ABCD内的正投影G为
ABD的重心,且直线EF与平面FBD所成角为60°,求二面角A-BE-D的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
![](https://img.xkw.com/dksih/QBM/2021/3/8/2673297535344640/2674051043975168/STEM/40457bd3-8d09-49ec-9f90-f408c814399c.png)
(1)求证:EF
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
(2)若平面EBD
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
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2021-03-09更新
|
2077次组卷
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5卷引用:安徽省江南十校2021届高三下学期3月一模联考理科数学试题
安徽省江南十校2021届高三下学期3月一模联考理科数学试题(已下线)专题1.7 空间向量与立体几何-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)解密15 空间向量与立体几何(分层训练)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练河南省郑州市中牟县第一高级中学2021届高三全真模拟训练四理科数学试题江苏省南通市如皋中学2020-2021学年高二下学期5月月考数学试题
名校
8 . 如图所示,在四棱锥
中,
底面
,底面
是矩形,
是线段
的中点.已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/a26e846a-d114-4fab-9ad7-fc7ebc2636e2.png?resizew=162)
(1)求证:
平面
;
(2)求二面角
的余弦值;
(3)直线
上是否存在点
,使得
与
垂直?若存在,求
的长;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a8067cc458cf12887177487c3cfb9c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/10/a26e846a-d114-4fab-9ad7-fc7ebc2636e2.png?resizew=162)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64785e4401e1d79632e360fd3626ed62.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
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6卷引用:中国人民大学附属中学2021届高三3月开学检测数学试题
中国人民大学附属中学2021届高三3月开学检测数学试题北京市中国人民大学附属中学2021届高三下学期开学考试数学试题(已下线)专题04 二面角(含探索性问题)-【解题思路培养】2022年高考数学一轮复习解答题拿分秘籍(全国通用版)(已下线)专题02 立体几何中存在性问题的向量解法-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)河北省石家庄市藁城新冀明中学2021-2022学年高二上学期10月考试数学试题北京交通大学附属中学2024届高三9月开学考数学试题
20-21高三下·全国·开学考试
名校
解题方法
9 . 如图,在直角
中,直角边
,角
,
为
的中点,
为
的中点,将
沿着
折起,使
,(
为
翻折后所在的点),连接
.
![](https://img.xkw.com/dksih/QBM/2021/3/6/2672271877398528/2672337086963712/STEM/caeb4078-1138-4c26-b22a-5304fe5deac6.png)
(1)求证:
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df14ccffcd0241dcb7fb1ced02d32d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb5b12692517a39c320f99a479eb055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7f3b09d95ceeed13e7d55a679b657b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/eda57a542cad261b2454a21ac7843d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44529c2beb5e27c4471748d48a244275.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://img.xkw.com/dksih/QBM/2021/3/6/2672271877398528/2672337086963712/STEM/caeb4078-1138-4c26-b22a-5304fe5deac6.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/395c912d29795223150dc9d72f17350c.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34a7494edc88340385272679347b6af2.png)
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5卷引用:百师联盟2020-2021学年高三下学期开年摸底联考考理科数学试卷(全国Ⅰ卷)
(已下线)百师联盟2020-2021学年高三下学期开年摸底联考考理科数学试卷(全国Ⅰ卷)江苏省百师联盟2021届高三下学期3月摸底联考数学试题(已下线)专题35 仿真模拟卷01-2021年高考数学(理)二轮复习热点题型精选精练(已下线)专题1.7 空间向量与立体几何-2021年高考数学解答题挑战满分专项训练(新高考地区专用)宁夏银川一中2022届高三上学期第五次月考数学(理)试题
名校
10 . 在四棱锥
中,底面
是正方形,
平面
,点
是棱
的中点,
,则( )
![](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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71d05cabe8b2ed458352638ef291ab45.png)
A.![]() |
B.直线![]() ![]() ![]() |
C.异面直线![]() ![]() ![]() |
D.四棱锥![]() ![]() |
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5卷引用:广东省佛山市南海区西樵高级中学2021届高三下学期2月月考数学试题