If mid-points of sides of a triangle joined, then the triangle is divided into four equal parts, Let area of each triangle, ΔXLM=ΔYLP=ΔPMZ=ΔLMP =6 units. Median divides the triangle into two equal parts, ∴ Area of each triangle, ΔLGM=ΔMGP=ΔPLG =2 units. ∴ Area of ΔGLM: Area of ΔXYZ=2:24=1:12