In the diagram below, ABCD is a quadrilateral with AD produced its own length to F. The diagonals of ABCD intersect at E. BCFD is a parallelogram and A₁ = C₁ = F A 2 B 2 E 2 2 1 C H Prove, with reasons, that ABCD is a parallelogram. 6.2 Prove, with reasons, that ABCD is a rectangle. F (4) (3) [7]​