# Answer the whole 12th question."DON'T SEND STHE SIMILAR QUERIES.KINDLY PERFORM THE STEP BY STEP AND APPROPRIATE ANSWER".: 12. (i) If ABCD is a rectangle in which the diagonal BD bisects $\angle$B, then show that ABCD is a square. (ii) Show that if the diagonals of a quadrilateral are equal and bisect each other at right angles, then it is a square.

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