5. In Fig. 9.13, AB and CD are common tangents to two circles of unequal radii. Prove that AB = CD. 5. In Fig. 9.13 AB and CD are common tangents to two circles of unequal radii. Prove that AB = CD. July 5, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 10 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related