如图,把直角坐标系xOy放置在边长为1的正方形网格中,O是坐标原点,点A、B、C均在格点上,将△ABC绕O点按顺时针方向旋转90°后,得到△A′B′C′,则点A'的坐标是( )
![](https://img.xkw.com/dksih/QBM/2021/2/23/2664037184126976/2671167106351104/STEM/6c4dd592a4674aeaa5ec5b5fc2f41d0f.png?resizew=243)
![](https://img.xkw.com/dksih/QBM/2021/2/23/2664037184126976/2671167106351104/STEM/6c4dd592a4674aeaa5ec5b5fc2f41d0f.png?resizew=243)
A.(﹣5,1) | B.(5,﹣1) | C.(﹣1,5) | D.(1,﹣5) |
更新时间:2021-03-05 08:46:18
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【知识点】 求绕原点旋转90度的点的坐标解读
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【推荐1】正方形ABCD在坐标系中的位置如图所示,将正方形ABCD绕D点顺时针方向旋转90°,得正方形
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ec09c2da3c41636f74f27466f05030.png)
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A.![]() | B.![]() | C.![]() | D.![]() |
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单选题
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容易
(0.94)
【推荐2】如图,在方格纸上建立的平面直角坐标系中,将
绕点
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![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/31/c4072e39-6b18-45e6-ab1e-9477c1d118c8.png?resizew=244)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2b83beedb3438153e6f728545fe3e03.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
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A.![]() | B.![]() |
C.![]() | D.![]() |
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