Triangle in Parallelogram
ABCD is a parallelogram. E, F, and G are on AB, BC, and CD respectively. AF and DE intersect at H; AF and EG intersect at I; AF and BG intersect at J; DF and BG intersect at K; DF and EG intersect at L. The area of quadrilateral BEIJ is 36; the area of quadrilateral DHIL is 40; the area of triangle GKL is 4; the area of triangle FJK is 5. What’s the area of triangle AEH?