解题方法
1 . 已知正方体
棱长为2,点
在线段
上运动,则( )
![](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/d7f6f93171329d508d491143b9d71f7b.png)
A.直线![]() ![]() ![]() |
B.三棱锥![]() ![]() |
C.![]() |
D.![]() ![]() |
您最近一年使用:0次
2 . 如图所示,两个长方形框架ABCD,ABEF满足
,
,且它们所在的平面互相垂直.动点M,N分别在长方形对角线AC和BF上移动,且CM和BN的长度保持相等,记
.
(2)当MN的长最小时,求平面MNA与平面MNB的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e15f970d1e9c973951fd9d7ad7ccdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea9e230f3b03fbcd3273e4dd2d52dd0d.png)
(2)当MN的长最小时,求平面MNA与平面MNB的夹角的余弦值.
您最近一年使用:0次
3 . 如图,这是缠线用的线拐子,在结构简图中,线段AB与线段CD所在直线异面垂直,E,F分别为AB,CD的中点,且
,
.使用线拐子时使丝线从点A出发,依次经过D,B,C,又回到点A.这样一直循环,丝线缠好后从线拐子上脱下,这称为“束丝”.若图中
,则丝线缠一圈的长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab00e0cff0876c4183a47f1272cf9928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b6cc3789c0e9b7d1226aa0de3327599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/131b630c661eff546537a530140f3434.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
7日内更新
|
25次组卷
|
2卷引用:贵州省遵义市2023-2024学年高二下学期6月月考数学试题
名校
4 . 如图,在四棱柱
中,侧棱
平面
,
,
,
,
,E为棱
的中点,M为棱
的中点.
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/633bf2de732ae51fc06ef3d559915da0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594bbb40a3dddaaf9ca6bb4c222b99e1.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
5 . 有一长方形的纸片
,
的长度为
,
的长度为
,现沿它的一条对角线
把它折成直二面角,则折叠后
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/095ab4a92bf822e175d370e6d0c8a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/976260cbf5e30856d4fd37a4b0a671a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c0098e82d41438224ce472054e5490.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知向量
,则向量
在向量
上的投影向量
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671ffb780b3c36cd2435c4af6417b349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 如图.已知平行六面体
的底面是菱形,
,
.
;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4660d993eda4d53b99bbe06a20344462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/920a7dec798f1fd44f5830504ab5bdec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a0e00113872f921116b6c0c3177d0f.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239198e40085b7dcffbe747c9c265a05.png)
您最近一年使用:0次
名校
解题方法
8 . 布达佩斯的伊帕姆维泽蒂博物馆收藏的达·芬奇方砖是在正六边形上画了具有视觉效果的正方体图案(如图1)把三片这样的达·芬奇方砖拼成图2的组合,这个组合再转换成图3所示的几何体.若图3中每个正方体的棱长为1,则( )
A.![]() |
B.异面直线![]() ![]() ![]() |
C.点![]() ![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
名校
9 . 在棱长均为1的三棱柱
中,
,点
满足
,其中
,则下列说法一定正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b11a79894447b31c2ca1163bc304871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d051546c15ec453fc53a6de2774b414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1ccdad989ebe7c7087be45cd0683a3.png)
A.当点![]() ![]() ![]() |
B.当![]() ![]() ![]() |
C.当点![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
10 . 已知平行六面体
中,
,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f01c4faacedfe56f5127d6c0cc63cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22889be95eae5a8abefd49889a605f80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65122258ecddd2626ab681756619508c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-07更新
|
368次组卷
|
3卷引用:江苏省连云港市东海县2023-2024学年高二下学期期中考试数学试题
江苏省连云港市东海县2023-2024学年高二下学期期中考试数学试题江苏省灌云高级中学2023-2024学年高二下学期期中考试数学试卷(已下线)专题01 空间向量表示及运算--高二期末考点大串讲(苏教版2019选择性必修第二册)