名校
1 . 已知四面体
是棱
的中点,设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9d86315677a86bb4dc09d06310f3f1.png)
________ (用向量
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1317c716f05a6b59afdbd0de7ba8987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc5343d0ed7b449971c7ba787a621fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9d86315677a86bb4dc09d06310f3f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
您最近一年使用:0次
2024-02-27更新
|
95次组卷
|
2卷引用:山东省菏泽市2023-2024学年高二上学期期末教学质量检测数学试题
名校
2 . 已知
是空间的一个单位正交基底,且
,则
与
夹角的余弦值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/808173f5aafa97a38056d68247d68314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c21f6d3f0953eb14dc0b7343b41416aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1070a28cb9cb8553c29747d1993b16.png)
您最近一年使用:0次
3 . 在棱长为2的正四面体
中,
为
的中点,则.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a64c90c7546af879a6a96e9b4abc4d5.png)
_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a64c90c7546af879a6a96e9b4abc4d5.png)
您最近一年使用:0次
4 . 在棱长为2的正四面体
中,
是
的中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb977972a377421cfc2aeef7d996ad6.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb977972a377421cfc2aeef7d996ad6.png)
您最近一年使用:0次
名校
5 . 在平行六面体
中,底面
是边长为2的正方形,侧棱
的长为3,且
,则
的长为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6c459662d5cc28d6b497b07f6456a96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/471927959af656b2ff02870388a062c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294a54c27a8d895190ce57b0f4cc222e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d92d9a29a3234e17db6fe0041c042f4.png)
您最近一年使用:0次
2024高二上·全国·专题练习
6 . 在直三棱柱
中,
,
,D为
的中点,在如图所示的空间直角坐标系中,
的坐标分别为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ead1d5ab63a76fc1fa2b0fef17c5c009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f788fb0059b7356dc6c7811f46057e66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1f47b28ba9aeaae062a569871be770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be8094e10da5b004100472adca90bdd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/9792d481-d462-48e7-a663-cb259a559751.png?resizew=136)
您最近一年使用:0次
7 . 在正方体
中,点
是
的中点,且
,则实数
的值为______ .
![](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/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf2e351b603c80b99ccb3ea7767dcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
您最近一年使用:0次
名校
8 . 如图,平行六面体
各条棱长均为2,
,
,则线段
的长度为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a674aa2ce5caabcad5abe65b5402ce6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce0d7095ddd69d6ceaf1065b1bc2c79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/13/057d9871-729c-4ac4-a8ae-9cd23b9f8d4b.png?resizew=226)
您最近一年使用:0次
名校
9 . 四棱柱
的底面
是正方形,底面边长为2,侧棱长是3,
,则对角线
的长为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39fdd41f2dce43e9f022811dc9958009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
您最近一年使用:0次
名校
10 . 在四棱锥
中,底面
是平行四边形,
是棱
上一点,且
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0250d80679c912a611e1521229cf24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6aab790b71d05eb637c0dd0e78bf3ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee477d164d38ff067fc4ce342cf6d380.png)
您最近一年使用:0次
2023-12-31更新
|
328次组卷
|
3卷引用:安徽省江淮名校2023-2024学年高二上学期12月阶段性联考数学试题
安徽省江淮名校2023-2024学年高二上学期12月阶段性联考数学试题江西省部分学校2023-2024学年高二上学期1月期末数学试题(已下线)3.2 空间向量基本定理(五大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)