2023·全国·模拟预测
名校
1 . 如图1所示,四边形ABCD中
,
,
,
,
,M为AD的中点,N为BC上一点,且
.现将四边形ABNM沿MN翻折,使得AB与EF重合,得到如图2所示的几何体MDCNFE,其中
.
(1)证明:
平面FND;
(2)若P为FC的中点,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c4340dcffb0783d118a587e5352a2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7605ce6f221ce8cad191da0f84a216d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2dcb2121af2b6d4ead458972439308.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/24/2f54442b-3ded-4f7d-a1d3-cfa199fb6ee6.png?resizew=344)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
(2)若P为FC的中点,求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a3e7730e98d2af874d11664a5d084b.png)
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2023-11-22更新
|
1340次组卷
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10卷引用:福建省漳州市诏安县桥东中学(霞葛教学点)2024届高三上学期第二次月考数学试题
福建省漳州市诏安县桥东中学(霞葛教学点)2024届高三上学期第二次月考数学试题(已下线)2024年普通高等学校招生全国统一考试理科数学领航卷(六)(已下线)2024年普通高等学校招生全国统一考试·信息卷理科数学(一)(已下线)2024年普通高等学校招生全国统一考试数学领航卷(八)(已下线)考点12 空间角 2024届高考数学考点总动员【练】宁夏石嘴山市平罗中学2023-2024学年高二上学期第三次月考数学试题(尖子班)吉林省辽源市田家炳高级中学校2023-2024学年高二上学期12月月考数学试题四川省成都市武侯高级中学2023-2024学年高二上学期12月月考数学试题青海省西宁市2024届高三上学期期末联考数学(理)试题(已下线)专题15 立体几何解答题全归类(9大核心考点)(讲义)-1
名校
解题方法
2 . 如图,正方体
的棱长为1,线段
上有两个动点E,F,且
,则下列结论中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e438a162ed349f7f25333e8f6c044e6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/868a0872-98b3-4366-8831-0617ac11ff39.png?resizew=163)
A.当E点运动时,![]() |
B.当E向![]() ![]() |
C.二面角![]() |
D.![]() ![]() ![]() |
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名校
3 . 如图,四边形ABCD是平行四边形,且
,四边形
是矩形,平面
平面
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/1aac6c4f-9bfa-46b8-898f-af69fbc3db75.png?resizew=170)
(1)求证:
平面
;
(2)求平面
与平面
所成夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e35225f4d153a40ff5a6485590805a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a4e3f0349fa83dc2a0b7d798f04843.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22437a2a3402609bfd4054a9f2b6c685.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/9/1aac6c4f-9bfa-46b8-898f-af69fbc3db75.png?resizew=170)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6541c0cb89f08aa4c937c0beb915e0a7.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
您最近一年使用:0次
2023-11-15更新
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696次组卷
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4卷引用:福建省三明市第一中学2023-2024学年高二上学期12月月考数学试题
名校
解题方法
4 . 如图,在棱长为2的正方体
中,点
满足
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b710ef8c39d3ba74e032a8b7859184.png)
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/5527b310-90a5-4b82-90cd-48c8eef25058.png?resizew=167)
![](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/9545017eee79a71befee621b52c8cae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b710ef8c39d3ba74e032a8b7859184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9cd49abd9bf3f125d945129e10bf29.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/5527b310-90a5-4b82-90cd-48c8eef25058.png?resizew=167)
A.存在点![]() ![]() ![]() | B.存在点![]() ![]() ![]() |
C.当![]() ![]() | D.当![]() ![]() |
您最近一年使用:0次
2023-11-15更新
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4卷引用:福建省厦门双十中学2023-2024学年高二上学期第二次月考数学试卷
5 . 一副三角板由两个直角三角形组成,如图所示,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5158a1cea978edcdd6cbaface415bbc.png)
且
,现将两块三角板拼接在一起,得到三棱锥
,取
和
中点
、
,则下列判断中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/7d31a959-728e-4f2f-b27d-5c70c9ad202c.png?resizew=319)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5158a1cea978edcdd6cbaface415bbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1ef93befe86e3115b654cb872d9722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5adc18ca424552b35ab939e9d57943e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a94c78d07395bd0379acf93e0a334b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/15/7d31a959-728e-4f2f-b27d-5c70c9ad202c.png?resizew=319)
A.直线![]() ![]() |
B.三棱锥![]() |
C.![]() ![]() |
D.设面![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-11-15更新
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645次组卷
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5卷引用:福建省“宁化、永安、尤溪、大田、沙县一中”五校协作2024届高三上学期11月联考数学试题
福建省“宁化、永安、尤溪、大田、沙县一中”五校协作2024届高三上学期11月联考数学试题(已下线)考点17 立体几何中的定值问题 2024届高考数学考点总动员【讲】广东省深圳市福田中学2024届高三上学期第三次月考数学试题福建省莆田市第六中学2024届高三上学期1月质检模拟数学试题(已下线)第二章 立体几何中的计算 专题一 空间角 微点5 直线与平面所成角综合训练【培优版】
名校
6 . 已知正四棱柱
的底面边长为1,侧棱长为2,点
为侧棱
上的动点(包括端点),
平面
.下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.异面直线![]() ![]() |
B.直线![]() ![]() |
C.![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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2023-11-14更新
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260次组卷
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3卷引用:福建省福州第三中学2023-2024学年高二上学期11月期中数学试题
7 . 如图,在四棱锥
中,
底面
,底面
是直角梯形,
,
,
,
是
的中点.
(1)求证:
平面
;
(2)若二面角
的余弦值为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.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/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd3c2e2199cd4565c05b949bc21fc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/13/505ca1b6-0de8-49a2-896d-9b29a5425143.png?resizew=177)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5102c216393e133fa25dba98cd78535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
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名校
8 . 已知正方体的
棱长为2,点M,N分别是棱
,
的中点,点P在平面
内,点Q在线段
上,若
,则
长度的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a604466a9c8d10d557b3dfc43b547065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90dd18184d12e9c1d8d1fca40973166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/8c96f02a-0260-4495-9a16-4f17045a4ec3.png?resizew=146)
您最近一年使用:0次
2023-11-13更新
|
365次组卷
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13卷引用:福建省厦门市杏南中学2023-2024学年高二上学期11月期中阶段测试数学试题
福建省厦门市杏南中学2023-2024学年高二上学期11月期中阶段测试数学试题北京市师大附中2022-2023学年高二上学期数学期末试题人教B版(2019) 必修第四册 北京名校同步练习册 第十一章 立体几何初步 本章测试江西省泰和中学2023届高三一模文科数学试题江西省泰和中学2023届高三一模理科数学试题【全国百强校】山西省大同市第一中学2017-2018学年高二5月月考数学(理)试题广东省茂名市五校联盟2021届高三上学期第一次联考数学试题安徽省蚌埠第三中学2019-2020学年高二上学期期中数学(理)试题(已下线)类型二 空间点、线、面的位置关系-【题型突破】备战2022年高考数学二轮基础题型+重难题型突破(新高考专用)海南省文昌中学2022届高三4月段考数学试题贵州省遵义市第二教育集团2021-2022学年高二上学期期末联考数学(理)试题贵州省遵义市第二教育集团2021-2022学年高二上学期期末联考数学(文)试题(已下线)第二章 立体几何中的计算 专题七 空间范围与最值问题 微点8 空间范围与最值问题综合训练
解题方法
9 . 如图,在三棱柱
中,底面是边长为
的等边三角形,
,
,
分别是线段
的中点,平面
⊥平面
.
(1)求证:
平面
;
(2)若点
为线段
上的动点,求平面
与平面
的夹角的余弦值的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8cb98c0adee7ca698d8b17dacb845b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93375ca41cdaac319b79f05108f7fc24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d06f8edd1a1f18ca2dae700c6a29ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b86d1a82c4e165826ff63c01fca82b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/4de463e5-50f4-4e20-a190-22646382758e.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d8a9d64ad3c8cba28840b41ed7837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
您最近一年使用:0次
10 . 在三棱柱
中,四边形
是菱形,
,平面
平面
,平面
与平面
的交线为l.
(1)证明:
;
(2)已知
上是否存在点
,使
与平面
所成角为
?若存在,求
的长度;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce04b35c265cc9c48b60204bd2f718ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/9c494202-f303-4309-861c-7eaff65f064f.png?resizew=155)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3f35646cb29fafd1e1a214b69e4f22d.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec9325eb4cf2b1d09d6be7c526cac67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655c413f509068d30b165f9d92bdba0.png)
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