Question

The sides BC and AD of a quadrilateral ABCD are parallel. M is the midpoint of AB. The are of ABCD is S. Find the area of the triangle C M D in terms of S

Answer 1

Answer:

I hope this picture would help you

Answer 2

Answer:

hope it helps...

this can also be proved by a theorem.

the theorem is... if a triangle and qusd. are on same base and between same parellels then the area of tri. is half the area of quad.