如图,在平面直角坐标系中,长方形ABCD的各边分别平行于x轴或y轴,一物体从点A(-2,1)出发,沿矩形ABCD的边按逆时针作环绕运动,速度为1个单位/秒,则经过2022秒后,物体所在位置的坐标为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/e7dda765-3f3e-4232-852f-2b93ff0edb6f.png?resizew=172)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/9/e7dda765-3f3e-4232-852f-2b93ff0edb6f.png?resizew=172)
A.(﹣2,1) | B.(﹣2,﹣1) | C.( 2,﹣1) | D.( 2,1) |
20-21七年级下·河北保定·期末 查看更多[3]
河北省保定市顺平县2020-2021学年七年级下学期期末数学试题重庆市第十八中学2021-2022学年七年级下学期期中数学试题(已下线)专题3.2 位置与坐标 重难点题型12个-2022-2023学年八年级数学上册重难题型全归纳及技巧提升专项精练(北师大版)
更新时间:2021-09-17 19:35:52
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【知识点】 点坐标规律探索
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【推荐1】如图,在平面直角坐标系中A(﹣1,1),B(﹣1,﹣2),C(3,﹣2),D(3,1),一只蚂蚁从点A出发以2个单位长度/秒的速度沿A→B→C→D→A循环爬行,问第100秒蚂蚁在( )处.
![](https://img.xkw.com/dksih/QBM/2022/5/4/2971925139832832/2974476585852928/STEM/268340aecfb74c1fa03769970dd0057e.png?resizew=178)
![](https://img.xkw.com/dksih/QBM/2022/5/4/2971925139832832/2974476585852928/STEM/268340aecfb74c1fa03769970dd0057e.png?resizew=178)
A.(1,1) | B.(﹣1,﹣2) | C.(1,﹣2) | D.(0,﹣2) |
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【推荐2】在平面直角坐标系中,对于点P(x,y),我们把点
叫做点P的友好点,已知点
的友好点为
,点
的友好点
,点
的友好点为
,…这样依次得到
,
,
,
,…若点
的坐标为(-3,2),则点
的坐标为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6073909f236b1c1d0576e59e08115b7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb23814c40a4929a6483d60a413968da.png)
A.(-1,-2) | B.(3,0) | C.(1,4) | D.(-3,2) |
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