133. Two adjacent angles of a parallelogram are in the ratio 1:3. Find its angles. 133. Two adjacent angles of a parallelogram are in the ratio 1:3. Find its angles. July 17, 2021 Category: Chapter 3 - Understanding Quadrilaterals , Chapter 4 - Practical Geometry , Maths , NCERT Class 8 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related