在平面直角坐标系中,
为原点.
![](https://img.xkw.com/dksih/QBM/2019/11/5/2327358788313088/2327414557614080/STEM/b347413286724ce1a6e15c48ef1e1fe5.png?resizew=160)
(1)点
的坐标为
,求线段
的长;
(2)点
的坐标为
,点
的坐标为
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2019/11/5/2327358788313088/2327414557614080/STEM/b347413286724ce1a6e15c48ef1e1fe5.png?resizew=160)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97fe88412da03cc114f2250593293217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b86022205a7487439dd8d0897cd3bf19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ebed6dde43b2739701f1c7195627b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
更新时间:2019-11-05 16:39:57
|
【知识点】 已知两点坐标求两点距离解读
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】如图,在平面直角坐标系中,矩形纸片
的边
,
在
轴的正半轴上,点
与点
重合,点
坐标为
,若把图形按如图所示折叠,使
、
两点重合,折痕为
.
(1)求证:
为等腰三角形;
(2)求折痕
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee05fdbfca9281f1eb74e11c8144938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
(2)求折痕
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://img.xkw.com/dksih/QBM/2021/7/2/2755608154759168/2760710088982528/STEM/19e1350e-3503-48d1-aa20-67f73356a440.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】在图中,A(1,3),B(﹣2,0)和C(2,﹣4)是一个直角三角形的顶点.
(1)求AB和BC的长度,答案以根式表示;
(2)求△ABC的面积.
(1)求AB和BC的长度,答案以根式表示;
(2)求△ABC的面积.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/6/523b4ca6-5829-43c7-a859-048e7cbbdecf.png?resizew=154)
您最近一年使用:0次