If in Fig. 9.7, PQRS and EFRS are two parallelograms, then ar (MFR) = 1/2 ar (PQRS). If in Fig. 9.7 PQRS and EFRS are two parallelograms then ar (MFR) = 1/2 ar (PQRS). July 1, 2021 Category: Chapter 9 - Areas of Parallelogram and Triangles , Maths , NCERT Class 9 ,