名校
解题方法
1 . 已知正方体
的棱长为1,
为线段
上任意一点,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/91cd9d8d-ae08-41cd-80e4-2acc4571b4ba.png?resizew=153)
![](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/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/91cd9d8d-ae08-41cd-80e4-2acc4571b4ba.png?resizew=153)
A.![]() |
B.动点![]() ![]() ![]() |
C.![]() ![]() ![]() ![]() ![]() |
D.三棱锥![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
解题方法
2 . 已知正四面体
的棱长为2,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
A.正四面体![]() ![]() |
B.若点P满足![]() ![]() ![]() ![]() |
C.若正四面体![]() ![]() ![]() ![]() |
D.若正四面体![]() ![]() |
您最近一年使用:0次
名校
3 . 已知正方体
的棱长为1,点P满足
,
,
,
(P,B,D,
四点不重合),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/11ae7072624587654d162548a80d7a1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1100379a4385b9ce064847bc21760adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be7b5066a7ac79c102d2a30d6280d3ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
A.当![]() ![]() |
B.当![]() ![]() ![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-12-09更新
|
808次组卷
|
8卷引用:广东省执信、深外、育才等学校2024届高三上学期12月联考数学试题
名校
解题方法
4 . 对于空间向量
,定义
,其中
表示x,y,z这三个数的最大值.
(1)已知
,
.
①直接写出
和
(用含
的式子表示);
②当
,写出
的最小值及此时
的值;
(2)设
,
,求证:
;
(3)在空间直角坐标系
中,
,
,
,点Q是
内部的动点,直接写出
的最小值(无需解答过程).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b303ef66609858e8ab234b6dabccba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e382f70d741ee01c165391ce980155d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a4461408813c1476a8a8073c83b8989.png)
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23056c429159c0198f865ff11972d8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e17d2355419564f6d9737295412b58c.png)
①直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9873960d64934875139754efbdfe951d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13af5f843689a63bc176c2d2171b6a1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53168695826b0a33a23067b76173c7e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/780ef5119f58f853ce9dd2b9176ffdde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778ae4468d857c229073875e0ee0ce31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6772fa3937b97d9ec3aec1ea2ea143b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95086cc97ef93f5166489b3bc47e1911.png)
(3)在空间直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b32ab04dd852329d5918b177c199eee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee736aec4313d04a5921ed7e5800b3b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d04a00e46c1ffb335f73506041c66dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084fc7655647b596d07e80269d086e5a.png)
您最近一年使用:0次
名校
解题方法
5 . 已知空间中三个点
组成一个三角形,分别在线段
上取
三点,当
周长最小时,直线
与直线
的交点坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a260f4d668933c7241146a02dae4e2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/504f0c0547a40bdbd23769f01e34a547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5b88ec996d2d117987e7303cefe4ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-11-19更新
|
312次组卷
|
3卷引用:湖北省部分高中联考协作体2023-2024学年高二上学期期中联考数学试题
名校
解题方法
6 . 在正四棱锥
中,若
,
,平面AEF与棱PD交于点G,则四棱锥
与四棱锥
的体积比为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120f8941f03c070168666baa80ef8c72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e70b3a2b50632e4441045cd65b94ffd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/042dd94d956b294c889202cc9d0721db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
您最近一年使用:0次
名校
7 . 以下说法错误的有( )
A.已知向量![]() ![]() ![]() ![]() |
B.对于任意非零向量![]() ![]() ![]() ![]() ![]() |
C.直线![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.A,B,C三点不共线,对空间任意一点O,若![]() |
您最近一年使用:0次
名校
8 . 如图,
是等腰直角三角形,
都垂直于平面
,且
为线段
的中点.
(1)证明:
;
(2)若
平面
,垂足为
,求平面
和平面
夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff8ec9971ec0b23d98a847fdf171209d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5365d59f410f35bc8e7fe548ca2d6f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319a01218514917e446dfc807a625ff.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/8/acfe9831-05c2-469e-958a-5b4ee5c7d282.png?resizew=126)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c79c4d655d22f6b3e9826adc6df810.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065f7ff90e26ff382aa7b709955ad1b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf2f0df53aa68c9c334165034788166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,点
是正四面体
底面
的中心,过点
的直线分别交
于点
是棱
上的点,平面
与棱
的延长线相交于点
,与棱
的延长线相交于点
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/964d2948-5e4c-4af3-883d-2e371eb155bf.png?resizew=167)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b9b62ea88f3953f9010bcb685d3329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2697046fb5056181292bcea4f7f3f8e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/28/964d2948-5e4c-4af3-883d-2e371eb155bf.png?resizew=167)
A.存在点![]() ![]() ![]() |
B.存在点![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.![]() |
您最近一年使用:0次
名校
10 . 如图,已知正方体
的棱长为2,点M为
的中点,点P为正方形
上的动点,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/632f2bf1cd0435041fa04b01901d1c8c.png)
A.满足MP//平面![]() ![]() |
B.满足![]() ![]() |
C.存在点P,使得平面AMP经过点B |
D.存在点P满足![]() |
您最近一年使用:0次
2022-07-08更新
|
2668次组卷
|
10卷引用:江苏省徐州市贾汪中学2022-2023学年高二下学期期末模拟数学试题
江苏省徐州市贾汪中学2022-2023学年高二下学期期末模拟数学试题(已下线)1.1.1 空间向量与线性运算(AB分层训练)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)四川省成都外国语学校2023-2024学年高二上学期12月月考数学试题(已下线)第1章 空间向量与立体几何单元测试能力卷-2023-2024学年高二上学期数学人教A版(2019)选择性必修第一册广东省梅州市2021-2022学年高一下学期期末数学试题(已下线)专题22 立体几何中的轨迹问题-1湖南省张家界市慈利县第一中学2022-2023学年高三上学期第四次月考数学试题云南省临沧市民族中学2022-2023学年上学期高二第三次月考数学试题(已下线)专题01 空间向量与立体几何(5)【江苏专用】专题10立体几何与空间向量(第二部分)-高二下学期名校期末好题汇编