9. In Fig. 9.26, X and Y are the mid-points of AC and AB respectively, QP || BC and CYQ and BXP are straight lines. Prove that ar (ABP) = ar (ACQ). 9. In Fig. 9.26 QP || BC and CYQ and BXP are straight lines. Prove that ar (ABP) = ar (ACQ). X and [...]