名校
1 . 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
名校
2 . 在三棱锥
中,
分别是
的中点,设
,用
表示
,则
等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca65b9c5449c3ad19e136f9026b9bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc5343d0ed7b449971c7ba787a621fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e76e5a010cfc7b1ccda2f4d6049715.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e76e5a010cfc7b1ccda2f4d6049715.png)
您最近一年使用:0次
2023-10-17更新
|
105次组卷
|
2卷引用:湖南省邵阳市邵东市第一中学2023-2024学年高二上学期12月月考数学试题
名校
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)
您最近一年使用:0次
2021-11-14更新
|
296次组卷
|
8卷引用:湖南省邵阳市新邵县2021-2022学年高二上学期期末质量检测数学试题