Problem: Draw two of the medians of a triangle. This subdivides the interior of the triangle into four pieces: the 3 triangles and a quadrilateral. Show that two of the three small triangles hae equal area and that the area of the third is equal to that of the quadrilateral.

Attempt:

So its really hard to describe geometric diagrams. I will try:

I have Triangle ABC. I drew median from vertex C to its opposite side and median from vertex A to opposite side. The quadrilateral mentioned is in the corner that vertex B is. From vertex B I draw a line that goes to the intersection of the previous two medians. Now I have 4 little triangles and I know that the ones that have equal bases have equal areas (because they share a height). However I cannot prove more than this.

help??