In the xy-plane, the points (c,d), (c,-d), and (-c,-d) are three vertices of a certain square. If c < 0 and d > 0, which of the following points is in the same quadrant as the fourth vertex of the square?
(-5,-3)
(-5,3)
(5,-3)
(3,-5)
(3,5)
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5和3怎么可能是正方形啊
题意是第四个点的坐标,不是c d值
5和3怎么可能是正方形啊
题意是第四个点的坐标,不是c d值