将点P(2,﹣1)以原点为旋转中心,顺时针旋转90°得到点P',则点P'的坐标是( )
A.(﹣2,1) | B.(﹣2,﹣1) | C.(﹣1,2) | D.(﹣1,﹣2) |
更新时间:2022-01-05 09:55:56
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