partition of quadrilateral part7@@
@There is a quadrilateral. The length of AP is same the length of BQ. The ratio of AB is same the ratio of the other sides(BC,CD,DA).

Move points(A,B,C,D,P) to find the geometric quality between the red areas and the area of quadrilateral ABCD.
E-mail me

Download CABRIU data (d89) from here.