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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