1 . 已知
为正方体
所在空间内一点,且
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98616ec6a351762039ee41df50060231.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540ccd15435aa2d59e809d6a28fb2467.png)
A.![]() |
B.三棱锥![]() |
C.存在唯一的![]() ![]() ![]() |
D.存在唯一的![]() ![]() |
您最近一年使用:0次
2024-01-26更新
|
148次组卷
|
4卷引用:广东省部分学校2023-2024学年高二上学期期末教学质量监测数学试卷
解题方法
2 . 如图,
为圆锥
底面的直径,
,点
是圆
上异于
的动点,球
内切于圆锥(与圆锥底面和侧面相切),点
是球
与圆锥侧面的交线上的动点,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/8ec47487-90ac-4dda-b11e-dc3fe0bde496.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32fb50c66cd2de786b39cb442ec54a16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8c91e4c85a9da7f54b2237d870a50d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/8ec47487-90ac-4dda-b11e-dc3fe0bde496.png?resizew=175)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
名校
解题方法
3 . 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![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
4 . 正方体
中,
为
的中点,
为正方体表面上一个动点,则( )
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.当![]() ![]() ![]() ![]() ![]() |
B.当![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-01-22更新
|
324次组卷
|
3卷引用:广东省深圳外国语学校、执信中学2023-2024学年高三上学期期末校际联考数学试卷
广东省深圳外国语学校、执信中学2023-2024学年高三上学期期末校际联考数学试卷河北省石家庄市部分重点高中2023-2024学年高三上学期2月期末数学试题(已下线)2024年高考数学二轮复习测试卷(新高考Ⅰ卷专用)
23-24高二上·广东汕头·期末
5 . 在长方体
中,已知
,
,点
在线段
上运动(不含端点),则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f97abea909791f73b84a07d3f15d8535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
A.![]() |
B.三棱锥![]() ![]() |
C.平面![]() ![]() |
D.若点![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
6 . 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.![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 将正方形
沿对角线
折起,当
时,三棱锥
的体积为
,则该三棱锥外接球的体积为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f83dbfddc6f98548699ed581e8c8608.png)
您最近一年使用:0次
2024-01-18更新
|
1355次组卷
|
4卷引用:广东省深圳市罗湖区2024届高三上学期期末数学试题
名校
解题方法
8 . 已知矩形ABCD中,
,
,将
沿BD折起至
,当
与AD所成角最大时,三棱锥
的体积等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73636989e83905f8800a865c2b608c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38c430e9f8f14a4753fc8e1da8aeca22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f20e3745b76031e0bf6f5a4a860165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b32ae75c9beabff560f1b52a52d434.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-17更新
|
1321次组卷
|
4卷引用:广东省深圳市龙岗区2024届高三上学期期末质量监测数学试题
广东省深圳市龙岗区2024届高三上学期期末质量监测数学试题广东省广州市第六中学2024届高三第三次调研数学试题江西省抚州市临川第一中学2024届高三“九省联考”考后适应性测试数学试题(一)(已下线)第二章 立体几何中的计算 专题三 空间体积的计算 微点4 四面体体积公式拓展综合训练【培优版】
名校
9 . 已知正方体
的内切球半径为1,
、
平面
,若
,
,现在有以下四个命题:
:点
的轨迹是一个圆
:点
的轨迹是一个圆
:三棱锥
的体积为定值
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33793be9405b184ada8d98b0b1ef78a2.png)
则下述结论正确的是( )
![](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/001e90e232a254b9a57dc3339ea265dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/600c2b2a205cc72c31bdda134bc60501.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5621c78ba894e47b6161e27a664093a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6291ec511abba1273b6f7e376099e088.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33793be9405b184ada8d98b0b1ef78a2.png)
则下述结论正确的是( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-01-09更新
|
259次组卷
|
2卷引用:广东省珠海市第一中学2024届高三上学期期末模拟数学试题(三)
10 . 如图,在长方体
中,
,
,M,N分别为BC,
的中点,点P在矩形
内运动(包括边界),若
平面AMN,则
取最小值时,三棱锥
的体积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5213d6ac74fb6044cab6927a3d2acaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f86e2d69b11402d9d6cbb06e057778a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d88755289c4e9a6fd25b181c82bf8057.png)
您最近一年使用:0次