4. ABCD is a parallelogram. A circle through A, B is so drawn that it intersects AD at P and BC at Q. Prove that P, Q, C and D are concyclic. -q 4. ABCD is a parallelogram. A circle through A B is so drawn that it intersects AD at P and BC at Q. Prove that P C and D are concyclic. July 2, 2021 Category: Chapter 10 - Circles , Maths , NCERT Class 9 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related