Prove that the diagonal divides a parallelogram into two congruent triangles

he properties of parallelograms state that the opposite sides are both congruent and parallel.

hello :

by applying the distributive property :

6 × 4.3 = 6 × ( 4 + 0.3 )

            =   (6 ×   4) + (6 ×   0.3)

            = 24 + 1.8

6 × 4.3 = 25.8