1 . 在空间直角坐标系中,
的坐标为
,
的坐标为
,
关于
轴的对称点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4665cc756635abc74f907e364d2f26e9.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79f79b6e912160e3349796c2b833941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8659cc7c28ac4301b18c30031f2969d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4665cc756635abc74f907e364d2f26e9.png)
您最近一年使用:0次
2023-11-19更新
|
126次组卷
|
3卷引用:四川省凉山彝族自治州西昌市2022-2023 学年高二上学期期中检测文科数学试卷
四川省凉山彝族自治州西昌市2022-2023 学年高二上学期期中检测文科数学试卷四川省凉山彝族自治州西昌市2022-2023 学年高二上学期期中检测理科数学试卷(已下线)模块一 专题1 空间向量的基本运算 A基础卷 期末终极研习室(2023-2024学年第一学期)高二人教A版
2 . 如图所示,在空间直角坐标系
中,三棱锥
各个顶点的坐标分别为
,
,
,
,则该三棱锥俯视图的面积为( )
![](https://img.xkw.com/dksih/QBM/2022/3/18/2939013715066880/2939679107366912/STEM/1f51f49b45a74116bef9198472d411ef.png?resizew=189)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49907525e041b8a4e1568cb9bc305f0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a29dec2325a85381379f79362db227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d2bd01acbea2a3fdd2245a313091f62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af81b4977fd8eb8080e470a86c303b23.png)
![](https://img.xkw.com/dksih/QBM/2022/3/18/2939013715066880/2939679107366912/STEM/1f51f49b45a74116bef9198472d411ef.png?resizew=189)
A.9 | B.8 | C.7 | D.6 |
您最近一年使用:0次