Question

In triangle def m and n are the mid point of sides ef and de respectively if ar emn=4 cm2 find ar def

Answer 1

ΔDEF is similar to ΔEMN

or, [EMN] / [DEF] = (EN/ED)² = (1/2)² = 1/4
or, [DEF]=4[EMN]=4×4 cm²=16 cm²