Thread: Area of Quadrilateral given diagonals and 1 side.

Can some one help me out please...

In a quadrilateral ABCD, the diagonals AC and BD intersect at O. Let OA = 2, OB = 2, OC = 3, OD = 4 and AB = 3. The area of the quadrilateral is ?

Im sorry if this is too simple....

Originally Posted by itsmaximhere

Can some one help me out please...

In a quadrilateral ABCD, the diagonals AC and BD intersect at O. Let OA = 2, OB = 2, OC = 3, OD = 4 and AB = 3. The area of the quadrilateral is ?

Im sorry if this is too simple....

The area (K) of a quadrilateral can be found by



the diagonals are p & q

In this case, from the data give:
p = 2+3 = 5 & q = 4+2 = 6

You have given the three sides of a triangle: 2,2,3
Use the cosine law to compute

Probably easier (since is isosceles)


Compute and , then plug them into the equation above.