9. If ΔABC and ΔPQR are to be congruent, name one additional pair of corresponding parts. What criterion did you use? 9. If ΔABC and ΔPQR are to be congruent name one additional pair of corresponding parts. What criterion did you use? October 8, 2020 Category: Chapter 7 - Congruence of Triangles , Maths , NCERT Class 7 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related