In the figure, ABCD is a parallelogram in which P is the mid -point of DC and Q is a point on Ac such that CQ=14AC If PQ produced meets BC at R, prove that R is a mid -point of BC.
In the adjoining figure ABCD is a parallelogram. āPā is a point on BC, DP and AB are produced meet at L. Prove that DP : PL = DC : BL.