ABCD is a rectangle. Prove that the centre of the circle through A, B, C, D is the point of intersection of its diagonals.

ABCD is a rectangle. Prove that the centre of the circle through A, B,

1.	ABCD is a rectangle. Prove that the centre of the circle through A, B, C, D is the point of intersection of its diagonals.
Answer» ABCD is a rectangle. Prove that the centre of the circle through A, B, C, D is the point of intersection of its diagonals.