已知
,
,求:
(1)线段
的中点坐标和长度;
(2)到
两点的距离相等的点
的坐标
满足的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49bbeeb822c00c98fa27b2a2e1365fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18672be14d911cbf53b7f9a7c9864e08.png)
(1)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bfcaf2a345411411cf94422703e9269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a14c388e1e2e5a2ff1ccf6caffbee0d.png)
更新时间:2020-01-20 14:18:37
|
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解答题-问答题
|
容易
(0.94)
【推荐1】如图,在棱长为1的正方体ABCD﹣A1B1C1D1中,E是AB的中点,F是BB1的中点,G是AB1的中点,试建立适当的坐标系,并确定E,F,G三点的坐标.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/1/c5bc7130-0d18-4343-ba55-8e18a43af529.png?resizew=153)
您最近一年使用:0次
解答题-问答题
|
容易
(0.94)
名校
【推荐2】如图,在长方体
中,
,
分别是
的中点,
,以点
为坐标原点,建立如图所示的空间直角坐标系
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/352ac886-07c1-4ef0-8113-4cf46a282428.png?resizew=225)
(1)写出
四点的坐标;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b55121ee242e8ef804b47cb38d6eb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf68723c4314474427a26628c973f499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560d8f6f9aed1ef8e35f7f3f7cf55d1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdb95bd58ac46ef75bab8a2a3992b85b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/17/352ac886-07c1-4ef0-8113-4cf46a282428.png?resizew=225)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a2dbe0254be2cc646c5a2a298225277.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572295d014ad3730e30b3557a5b93086.png)
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