O' is an interior point of a parallelogram ABCD. Prove that :
area of `Delta AOB + " area of " Delta COD = " area of " Delta AOD + " area of " Delta BOC`

O' is any point on diagonal AC of a parallelogram ABCD. Prove that : area of Delta AOD = " area of " Delta AOB

In the adjoning figure, ABCD is a parallelogram. Prove that : area of Delta BPC = " area of " Delta DPQ

In parallelogram ABCD, P is a point on side AB and Q is a point on side BC, prove that (i) Delta CPD and Delta AQD are equal in area. (ii) area (Delta AQD) = " area of " Delta APD + " area of " Delta CPB

The medians of Delta ABC intersect at point G. Prove that: area of Delta AGB = (1)/(3) xx " area of " Delta ABC

In the adjoining figure D, E and F are the mid-points of the sides BC, CA and AB respectively of Delta ABC . Prove that: (i) square BDEF is a parallelogram (ii) area of Delta DEF = (1)/(4) xx " area of " Delta ABC (iii) area of square BDEF = (1)/(2) xx " area of " Delta ABC

In the given figure, ABCD is a parallelogram. Find the area of Delta AED

In the adjoining figure, BD = DC and AE = ED. Prove that area of Delta ACE = (1)/(4) " area of " Delta ABC

In the adjoining figure, DE || BC . Prove that area (Delta ACD) = " area " (Delta ABE)

Area of quadrilateral ABCD =Area of Delta ABC+ area of "_______"