three parallel lines

There are three parallel lines (FG//DE//BC). Points A and P are on segment FG. Lines BP and CA cross on point E.Point D is on line AB.Point P moves on segment FG.


Move point D to find the geometric quality of the lengths (AP, DE, BC) .

@You can also move points (A, B, C, D, E, F) on CABRI.

Download CABRIU data (d25) from here.