5. Show that if the diagonals of a quadrilateral are equal and bisect each other at right angles, then it is a square. 5. Show that if the diagonals of a quadrilateral are equal and bisect each other at right angles then it is a square. October 15, 2020 Category: Chapter 8 - Quadrilaterals , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related