1 . 正四棱锥
底面边长为2,高为3,则点
到不经过点
的侧面的距离为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
解题方法
2 . 如图1所示,
是水平放置的矩形,
,
.如图2所示,将
沿矩形的对角线
向上翻折,使得平面
平面
.
的体积
;
(2)试判断与证明以下两个问题:
① 在平面
上是否存在经过点
的直线
,使得
?
② 在平面
上是否存在经过点
的直线
,使得
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
(2)试判断与证明以下两个问题:
① 在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49b2f51d88feb313b735e8077117abb.png)
② 在平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0bcc3c5b41a01362779683f5b70710c.png)
您最近一年使用:0次
3 . 如图,在五面体ABCDEF中,FA⊥平面ABCD,
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74aa71480d770188fc29821999d97e9f.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/5ec13246-d7c7-4df6-b1b0-05135ee07da4.png?resizew=182)
(1)求五面体ABCDEF的体积;
(2)若M为EC的中点,求证:平面
平面AMD.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd9f608b8362c2a375dd9926a110152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74aa71480d770188fc29821999d97e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee11b995ab36bd4a1149fc1a30acfc99.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/16/5ec13246-d7c7-4df6-b1b0-05135ee07da4.png?resizew=182)
(1)求五面体ABCDEF的体积;
(2)若M为EC的中点,求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c1acdd27cebb11e0266464b03b3afb.png)
您最近一年使用:0次
2023-04-13更新
|
759次组卷
|
6卷引用:上海市静安区2023届高三二模数学试题
上海市静安区2023届高三二模数学试题(已下线)专题07 空间向量与立体几何(已下线)上海市静安区2023届高三二模数学试题变式题16-21(已下线)考点10 空间向量的应用 2024届高考数学考点总动员【练】(已下线)专题1.5 空间向量的应用【十大题型】-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)专题05 用空间向量研究直线、平面的平行、垂直问题10种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教A版2019选择性必修第一册)
4 . 如图,在四棱锥
中,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/14/f8e34830-3e17-4bbe-b057-6a90c440da6e.png?resizew=163)
(1)证明:平面
平面
;
(2)若
,
,且四棱锥
的体积为
,求
与平面
所成的线面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89a4e5c5d9453a94a31ae6a33d1f153.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/14/f8e34830-3e17-4bbe-b057-6a90c440da6e.png?resizew=163)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/652e17c25238a446ab3e6b0b3e4efeab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f67538eedbdf54a1bcaff4394230e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a391005600bdd69c96750589f9adb048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2023-04-13更新
|
2967次组卷
|
8卷引用:上海市静安区市北中学2024届高三上学期12月月考数学试题
5 . 在四棱锥P﹣ABCD中,底面是边长为2的菱形,∠DAB=60°,对角线AC与BD相交于点O,PO⊥平面ABCD,PB与平面ABCD所成的角为60°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/75820310-db78-455d-9a78-afec674717ab.png?resizew=193)
(1)求四棱锥P﹣ABCD的体积;
(2)若E是PB的中点,求异面直线DE与PA所成角的大小(结果用反三角函数值表示).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/75820310-db78-455d-9a78-afec674717ab.png?resizew=193)
(1)求四棱锥P﹣ABCD的体积;
(2)若E是PB的中点,求异面直线DE与PA所成角的大小(结果用反三角函数值表示).
您最近一年使用:0次
2022-11-08更新
|
398次组卷
|
5卷引用:上海市静安区2022届高考二模数学试题
名校
6 . 如图,在三棱锥
中,平面
平面
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955971662659584/2956717295919104/STEM/69fa063f3996487fa0bd9255615593f8.png?resizew=265)
(1)证明:
;
(2)已知
是边长为1的等边三角形,且三棱锥
的体积为
,若点
在棱
上,且二面角
的大小为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2022/4/11/2955971662659584/2956717295919104/STEM/69fa063f3996487fa0bd9255615593f8.png?resizew=265)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be01a95cdd3149512bf95d6084fdd6.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a8b76e36783a69d14ec54af82c7df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d453870b345da0c41977290192f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2244f3227a392f4b576d2464b890cab1.png)
您最近一年使用:0次
2022-04-12更新
|
857次组卷
|
6卷引用:上海市静安区2022届高三下学期6月最后阶段水平模拟数学试题
上海市静安区2022届高三下学期6月最后阶段水平模拟数学试题江苏省苏州市昆山中学2022届高三下学期2月阶段性调研测试数学试题(已下线)临考押题卷04-2022年高考数学临考押题卷(新高考卷)(已下线)临考押题卷03-2022年高考数学临考押题卷(新高考卷)(已下线)第20讲 空间向量与立体几何-3(已下线)专题11空间向量与立体几何必考题型分类训练-2
名校
解题方法
7 . 直三棱柱
中,
为正方形,
,
,M为棱
上任意一点,点D、E分别为AC、CM的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/53ef0522-8a05-438d-90ad-7c82c2c8030c.png?resizew=181)
(1)求证:
平面
;
(2)当点M为
中点时,求三棱锥
的体积.
![](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/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e918b70b02a73685e3c536c7f380e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/8/53ef0522-8a05-438d-90ad-7c82c2c8030c.png?resizew=181)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75aea24647cd4d0b4b9aa513bf5457b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
(2)当点M为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4711ea198eebe0a72ef2c66a9dd51b83.png)
您最近一年使用:0次
2022-03-17更新
|
2150次组卷
|
6卷引用:上海市静安区风华中学2024届高三上学期11月月考数学试题
名校
解题方法
8 . 长方体ABCD﹣A1B1C1D1,AB=BC=2,直线A1C与平面ABCD所成角为
.
(2)求异面直线A1B与B1C所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
(2)求异面直线A1B与B1C所成角的大小.
您最近一年使用:0次
2021-07-06更新
|
245次组卷
|
12卷引用:上海市市西中学2024届高三上学期开学考试数学试题
上海市市西中学2024届高三上学期开学考试数学试题2019年上海市崇明区高三上学期期末(一模)数学试题上海市青浦高级中学2021届高三三模数学试题上海市青浦区2021届高三三模数学试题上海市行知中学2022届高三上学期10月月考数学试题上海市嘉定区封浜高级中学2019-2020学年高二下学期期末数学试题(已下线)专题3.5 简单几何体【易错题型专项训练】-2020-2021学年高二数学下学期期末专项复习(沪教版)(已下线)13.3 空间图形的表面积和体积-2020-2021学年高一数学同步课堂帮帮帮(苏教版2019必修第二册)(已下线)13.3空间图形的表面积和体积-2021-2022学年高一数学10分钟课前预习练(苏教版2019必修第二册)上海市川沙中学2023-2024学年高二上学期期中数学试题上海市浦东新区南汇第一中学2023-2024学年高二上学期期中数学试题上海市敬业中学2023-2024学年高二下学期5月月考数学试题
解题方法
9 . 已知正方形
的边长为
,
为两条对角线的交点,如图所示,将Rt△BED沿BD所在的直线折起,使得点E移至点C,满足
.
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712413310828544/2714298242097152/STEM/fc4184ee-8031-4e69-8a0e-efa5bee11cf4.png?resizew=316)
(1)求四面体
的体积
;
(2)请计算:
①直线
与
所成角的大小;
②直线
与平面
所成的角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d70676406f26d339465fe3473c0c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://img.xkw.com/dksih/QBM/2021/5/2/2712413310828544/2714298242097152/STEM/fc4184ee-8031-4e69-8a0e-efa5bee11cf4.png?resizew=316)
(1)求四面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
(2)请计算:
①直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
您最近一年使用:0次