if the sum of the distances of any vertex of a quadrilateral from the other three is same then prove that the quadrilateral is a rectangle

if the sum of the distances of any vertex of a quadrilateral from the

1.	if the sum of the distances of any vertex of a quadrilateral from the other three is same then prove that the quadrilateral is a rectangle
Answer» if the sum of the distances of any vertex of a quadrilateral from the other three is same then prove that the quadrilateral is a rectangle