名校
1 . 在四面体
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d00bb80c0da5f0111e784cd0f12faa3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926ddd0b69d714c7310cc5bf23d199d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-03-10更新
|
307次组卷
|
4卷引用:陕西省部分学校2023-2024学年高二下学期开学摸底考试数学试卷
2 . 如图,在空间直角坐标系
中,正方体
的棱长为1,且
于点E,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a834024400d0730af3e640ca4d5f54b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22a20b689283cc8b311eddae4c8c4242.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77bb3ceea90414c8561c000e724f2aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/398c5d7b6ff455e94a78034670a3eeca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/fe8be1e3-2774-4a29-807f-bb610ae8e4d9.png?resizew=145)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
3 . 空间四边形OABC中,
,点
在OA上,
,点
为BC的中点,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/1ecdd91f-6277-47bf-b3fd-c07bfac61021.png?resizew=142)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352afb2166bc2d282d55bd7bba4388e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a6df89d21d97de4928ee94b2c6af33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8926ddd0b69d714c7310cc5bf23d199d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/20/1ecdd91f-6277-47bf-b3fd-c07bfac61021.png?resizew=142)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
4 . 在三棱锥
中,
为
的中点,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/1e99e52d-3af5-4dcd-a98d-0481254bc045.png?resizew=155)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d859221abb763742e332779e9eab59.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/11/1e99e52d-3af5-4dcd-a98d-0481254bc045.png?resizew=155)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-02-12更新
|
234次组卷
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5卷引用:陕西省西安市莲湖区2023-2024学年高二上学期期末质量监测数学试题
名校
5 . 在四面体 中,
分别为
的中点,则
您最近一年使用:0次
6 . 如图,在四面体
中,
两两垂直,
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/f60a00ce-2641-4e8c-bd38-0aaa0af62f0f.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576d6670e3441abae8870240e84b42c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d1aecd69a487a3698298e25b18ab023.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/16/f60a00ce-2641-4e8c-bd38-0aaa0af62f0f.png?resizew=143)
A.向量![]() ![]() ![]() |
B.向量![]() ![]() ![]() |
C.向量![]() |
D.向量![]() |
您最近一年使用:0次
2023-12-15更新
|
186次组卷
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4卷引用:陕西省西安市部分学校2023-2024学年高二上学期12月联考数学试题
7 . 如图,在三棱柱
中,
分别为
和
的中点,设
.
(1)用
表示向量
;
(2)若
,
,
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb5f474b6067ce50ca48790c45fd587.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/8/e1aec47f-0dba-4964-a4ee-64f4bd3ec162.png?resizew=162)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa8c53645db602c72b00b599c2c0ff97.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9523d53df3a91e8bc9abaee19a1fb753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981978eee3927889e8527272c98468b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9eac7e04c7e650dfbf10ea05ea6045.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5a8d419738d657c20fa8d1ba91c053.png)
您最近一年使用:0次
2023-11-15更新
|
389次组卷
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5卷引用:陕西省汉中市多校联考2023-2024学年高二上学期12月月考数学试题
陕西省汉中市多校联考2023-2024学年高二上学期12月月考数学试题贵州省2023-2024学年高二上学期11月期中联考数学试题辽宁省抚顺市六校2023-2024学年高二上学期期中考试数学试题(已下线)专题01 空间向量及其应用常考题型归纳(1)(已下线)6.1 空间向量及其运算(5)
名校
8 . 给出下列命题:
①若空间向量
,
满足
,则
与
的夹角为钝角;
②空间任意两个单位向量必相等;
③对于非零向量
,若
,则
;
④若
为空间的一个基底,则
构成空间的另一个基底.
其中说法正确的个数为( )
①若空间向量
![](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/abdab13be1e0b75550db1b6ad88c2b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
②空间任意两个单位向量必相等;
③对于非零向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d366d8fbb7258ee051f49977441e14a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/693ca4bb515ca182ba6e465e6d584168.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778542d99ab19e2ecc0c7ef75161f133.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed18a92338c7578c18a5ba3a2ae1ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4168c5c168c00a5337ad92b63a867cdf.png)
其中说法正确的个数为( )
A.0 | B.1 | C.2 | D.3 |
您最近一年使用:0次
2023-11-03更新
|
420次组卷
|
3卷引用:陕西省渭南市大荔县2023-2024学年高二上学期期末教学质量检测数学试题
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9 . 如图,在平行六面体
中,若
,则有序实数组
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cd25f791ae3d8e8380f7d21fd31e5e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ead8a3552faf9a9224c536a40b4085.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/f9ca9c6d-09cf-45eb-b098-c05c1f615e67.png?resizew=209)
A.![]() |
B.![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
2023-11-02更新
|
323次组卷
|
4卷引用:陕西省西安市区县联考2023-2024学年高二上学期期末数学试题
10 . 在正四面体OABC中,E,F,G,H分别是OA,AB,BC,OC的中点.设
,
,
.
(1)用
,
,
表示
,
;
(2)用向量方法证明:E,F,G,H四点共面.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14390e9b6b44472bdc7a131133ab39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cd14dfc0024459f9d8e594c95c5106.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e07dcf0b16163e0e0e0c0f248466ee7e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/8/3d7b3045-39ae-4d68-a19b-b247708dab16.png?resizew=189)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae54940f33b8714da5fe3b7546f8b3dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74c0f207612e015857b78b99db483e4.png)
(2)用向量方法证明:E,F,G,H四点共面.
您最近一年使用:0次
2023-10-20更新
|
109次组卷
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2卷引用:陕西省西安市周至县第六中学2023-2024学年高二上学期10月月考数学试题