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

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

ABCD is a parallelogram. Find the ratio of the area of Delta ABC to the area of the parallelogram ABCD.

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

In the figure, what is the area of Delta ABC ?

In the figure, what is the 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) square BDEF = (1)/(2) xx " area of " Delta ABC

If P is any point in the interior of a parallelogram A B C D , then prove that area of the triangle A P B is less than half the area of parallelogram.

In the adjoning figure, D and E are the points on the sides AB and AC respectively of Delta ABC and area of Delta BCE = " area of " Delta BCD . Prove that DE ||BC