Problem: ABCD is a square. E(4, 3), F(2, 5) lie on AB and CD respectively such that EF divides the square in two equal parts. If the coordinates of A is (7, 3), other coordinates of the vertices can be
(A) (7, 2)
(B) (7, 5)
(C) (-1, 3)
(D) (-1, 7)
Ans: (B), (C).
Sol: Mid-point (G) of EF is centre of square.
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