12. If a pair of opposite sides of a cyclic quadrilateral are equal, prove that its diagonals are also equal. 12. If a pair of opposite sides of a cyclic quadrilateral are equal prove that its diagonals are also equal. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related