解题方法
1 . 如图,在棱长为2的正方体
中,点E、F、G、H分别为棱
、
、
、
的中点,点M为棱
上动点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/23/e2730018-bfe9-46ef-845e-25bb36d3ff0e.png?resizew=160)
A.点E、F、G、H共面 | B.![]() ![]() |
C.点B到平面![]() ![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 三个相似的圆锥的体积分别为
,
,
,侧面积分别为
,
,
,且
,
,则实数
的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4764374bd2fb78e59cd0b283637baeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63055a5d6916f99d07fede49120753f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3411c87c90bd10bbadd9201630bf45f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7f090201a6e72fbe8bd6bb55cd2cb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1134d7995638f04b3700b7e404b2da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2024-03-16更新
|
1071次组卷
|
4卷引用:河南省部分重点高中2024届高三普通高等学校招生全国统一考试(期末联考)数学试卷
河南省部分重点高中2024届高三普通高等学校招生全国统一考试(期末联考)数学试卷 河南省部分重点高中(青桐鸣)2023-2024学年高三上学期期末大联考数学试题湖南省2024届高三数学新改革适应性训练二(九省联考题型)(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5 面积、体积的范围与最值问题(三)【基础版】
3 . 某广场设置了一些石凳供大家休息,这些石凳是由正方体截去八个一样的四面体得到的.如图所示,已知正方体边长为6,则该石凳的体积为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/b982f13e-3991-4402-90ae-e2a21f7ab23a.png?resizew=134)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/b982f13e-3991-4402-90ae-e2a21f7ab23a.png?resizew=134)
A.180 | B.36 | C.72 | D.216 |
您最近一年使用:0次
4 . 已知正三棱锥
的四个顶点均在球
的表面上,若正三棱锥
的体积为
,则球
的体积的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
5 . 如图,在四棱锥
中,平面
平面
,四边形
为等腰梯形,且
,
为等边三角形,平面
平面
直线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/393ed859-f083-4886-8836-37ea7eca5fe1.png?resizew=116)
(1)证明:
平面
;
(2)若
与平面
的夹角为
,求四棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.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/83d8af1e40a1febb02025c503a1fcf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1084a42a7b7600ac9651a023de6d3401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86d203d7c9c234210070a15117154e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/393ed859-f083-4886-8836-37ea7eca5fe1.png?resizew=116)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23976db53f05b3d5d791c4d736a7184d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
2024-03-07更新
|
587次组卷
|
2卷引用:河南省部分重点高中2024届高三普通高等学校招生全国统一考试(期末联考)数学试卷
6 . 如图,正三棱柱
的底面边长为1,高为3,已知
为棱
的中点,
分别在棱
上,
,记四棱锥
,三棱锥
与三棱锥
的体积分别为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969630cb6dc51ef586be9517ed70eb8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509b1b17de3ded06b896e3314d874f93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc697bf3205843ac009fee124ef8239d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cd8ecd9806e3a8c9b2de96110970b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8511319e215aeba124994a03f2d91fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e1fa43badbcca84eb7310e1e039335.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
7 . 在棱长为2的正方体
中,点
,
,
分别是线段
,线段
,线段
上的动点,且
.则下列说法正确的有( )
![](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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e97fcdcfd6183b976a61ef3222c607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771764b4ccfe35b79337f7ce18331c4b.png)
A.![]() |
B.直线![]() ![]() ![]() |
C.三棱锥![]() |
D.当四棱锥![]() ![]() |
您最近一年使用:0次
2024-03-07更新
|
1315次组卷
|
5卷引用:江西省新八校2023-2024学年高三上学期第一次联考(期末)数学试题
江西省新八校2023-2024学年高三上学期第一次联考(期末)数学试题广东省深圳市东北师范大学附属中学深圳学校2024届高三下学期3月校内模拟测试数学试题湖南省邵阳市第二中学2023-2024学年高二下学期4月期中考试数学试题(已下线)湖南省长沙市雅礼中学2023-2024学年高一下学期期中考试数学试题变式题11-15(已下线)核心考点5 立体几何中的位置关系 B提升卷 (高一期末考试必考的10大核心考点)
解题方法
8 . 如图,在五面体
中,四边形
是矩形,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/ac04a6d1-7e5c-4d40-bcaa-cb0c4e32ba6f.png?resizew=195)
(1)求该五面体的体积;
(2)请判断在棱
上是否存在一点G,使得
与平面
所成角的正弦值为
?若存在,求
的长;若不存在,请说明理由.
![](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/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933a0519b5836441694e2c23fed350d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/6/ac04a6d1-7e5c-4d40-bcaa-cb0c4e32ba6f.png?resizew=195)
(1)求该五面体的体积;
(2)请判断在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57519125aaed7afca4d6a45102c517a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
您最近一年使用:0次
9 . 如图,在三棱锥
中,
,垂足为点E,
平面
,垂足
在
上,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/aad3a293-0d2c-40ef-877c-3fb654dfe645.png?resizew=148)
(1)证明:
平面
;
(2)若
,
,三棱锥
的体积为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a45b04cc3e5adaeff6f9e01e29032803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5365b846c8d6eb432002a4ee32cb9137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bf5ab2c736a9fe193d7c9b3360bd1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/4/aad3a293-0d2c-40ef-877c-3fb654dfe645.png?resizew=148)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d110b832093fb351f303d7a911927a8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88d7bf9b0b01d26071a75001da5b9a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8af2fdf1944afebb51cb6a5e6c74aadd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
您最近一年使用:0次
解题方法
10 . 如图,棱长为1的正方体
中,E为棱
的中点,点F在该正方体的侧面
上运动,且满足
平面
.下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b724168afaee2ecddf97257180be18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ea211a573491409cb60f9fbe9a65cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/923189afc198d153c79059a827f63c87.png)
A.点F轨迹是长度为![]() |
B.三棱锥![]() ![]() |
C.存在一点F,使得![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次