Let S be a square of unit area. Consider any quadrilateral which has one vertex on each
Channel: Doubtnut
Date: 24/05/2020

Let S be a square of unit area. Consider any quadrilateral which has one vertex on each side of S. If a,b,c and d denote the lenghts of the sides of the quadrilateral,  Prove that `2lea^(2)+b^(2)+c^(2)+d^(2)le4.`