D,E,F are the mid points of the sides of BC,CA,AB.prove that BDEF is a parallelogram whose area is half that of triangle ABC and area of triangle DEF =1/4 of area of triangle ABC
Hi Gracy,
Please check Ex 9.3, 5 of Chapter 9 Class 9 here https://www.teachoo.com/1241/449/Ex-9.3--5---D--E-and-F-are-the-mid-points-of-sides-BC--CA/category/Ex-9.3/