已知平行六面体
的所有棱长都为1,且
,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e322f79e083e471b34950b9ffabffdc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85fb581e6a89ae40731b8619fff1e173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
23-24高三上·山东德州·期中 查看更多[3]
(已下线)山东省德州市2023-2024学年高三上学期期中考试数学试题黑龙江省哈尔滨市第九中学校2023-2024学年高二上学期12月月考数学试题(已下线)专题03 空间向量数量积的应用(期末选择题3)-2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)
更新时间:2023-11-15 00:13:40
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【推荐1】在平行六面体(底面是平行四边形的四棱柱)ABCD-A1B1C1D1中,AB=AD=AA1=1,
,则
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be560befd3ac8e670f8b6edd15edf31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
A.![]() | B.6 | C.![]() | D.![]() |
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【推荐2】已知在四面体
中,点
是棱
上的点,且
,点
是棱
的中点,若
其中
为实数,则
的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/be797b5d-331a-48d7-991e-6a63f15b71de.png?resizew=146)
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f88011a75e5398a087f80dc1f4159a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ae38585813c6eeefdcc61df52e4547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1433c8103033c67232f2f9ae189608d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/be797b5d-331a-48d7-991e-6a63f15b71de.png?resizew=146)
A.![]() | B.![]() | C.-2 | D.2 |
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【推荐1】在平行六面体
中,底面
是菱形,侧面
是正方形,且
,
,
,若P是
与
的交点,M是
的中点,则
( )
![](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/e22ebcc4aa98d46366df48f751a5f368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404005c9bb408214fe5bafee7507e175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4f5eec0addba78f2e0cdfb7ecc59a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93ecad355286188fd317939fa50f9555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c353d17341805c8a8e69de03d81cf1f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/28/b3986cdd-06b5-404d-aad6-fb4d5f156946.png?resizew=179)
A.5 | B.7 | C.3 | D.![]() |
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【推荐2】如图,平行六面体
的底面
是矩形,
,
,
,且
,则线段
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/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf90bac174f02c4552e56df4d910bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e322f79e083e471b34950b9ffabffdc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/6/98e97a32-365a-411d-b6d1-a06430751298.png?resizew=165)
A.![]() | B.![]() | C.![]() | D.![]() |
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