2. Let s denote the semi-perimeter of a triangle ABC in which BC = a, CA = b, AB = c. If a circle touches the sides BC, CA, AB at D, E, F, respectively, prove that BD = s – b. -e 2. Let s denote the semi-perimeter of a triangle ABC in which BC = a AB = c. If a circle touches the sides BC AB at D Ca CA = b F prove that BD = s – b. respectively July 5, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 10 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related