名校
1 . 如图,在平行六面体
中,
,且
,
,则
的长为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689bec4abbc0d2d223eb7816c340bd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30f42abc82732bfcd2ee59281ac038e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/493ef4cc9c454f0a3ae68e710086b754.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a037b1a3ec2e37bbcb05d0a467efb511.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/11/9953d7e3-a58e-4cd5-87c8-9b4f1b0c3dce.png?resizew=220)
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2 . 如图,正四面体
的长为1,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1303344ccf2f51d3d4f99ed0f60eee.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0772aa1bd117cacc2eb959d39da92151.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d1303344ccf2f51d3d4f99ed0f60eee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/16/b45a272a-88a7-425b-9451-2529e0804840.png?resizew=164)
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2023-02-15更新
|
494次组卷
|
3卷引用:云南省昆明市云南师范大学附属中学2023-2024学年高二上学期10月月考数学试题
云南省昆明市云南师范大学附属中学2023-2024学年高二上学期10月月考数学试题湖北省荆州市监利市2022-2023学年高二下学期2月调考数学试题(已下线)1.1.2 空间向量的数量积运算(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)
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3 . 在平行六面体
中,点P是AC与BD的交点,若
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a58b0a3c50afe8cfe95e7e64569722.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/991451c5002137302527700e195220e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485079a40100a88cd5b9bed7f057ba8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a58b0a3c50afe8cfe95e7e64569722.png)
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2021-11-14更新
|
296次组卷
|
8卷引用:云南省大理市2021-2022学年高二上学期期中联考数学试题
4 . 如图所示,空间四边形OABC中,
,
,
,点M在OA上,且OM=2MA,N为BC中点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5a82589fe45111743acf86cd8ba366.png)
_____________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ac5f94e56c4679a32df00c5bb57964.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63666d7cc3b50ada407f904098e163c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f77e78c91e893f7759482b8de993020f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b5a82589fe45111743acf86cd8ba366.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/16/d3ee7859-ce83-4922-a146-ccdf6bad5dd0.png?resizew=156)
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