Geom025: How big is quadrilateral DBEF?

Geom025:   How big is quadrilateral DBEF?
  ABC is a general triangle and its area is equal to 132 cm square

The opposite side of edge A is divided in 4 equal parts and the opposite side of edge C in 3 equal parts

Straight lines join the point A to each quarter of line BC. Likewise, from point B to each third of line AB.

How big is the area of quadrilateral DBEF?

Posted in: Geometry