dividing a rhomboid

There is rhomboid ABCD. Point P is on segment AC. Segment QS is parallel to segment AD. Segment TR is parallel to segment AB. Segments QS and TR divide rhomboid ABCD.

Move point P to find the geometric quality between rhomboids PQBR and PSDT.

@You can also move points A, B, C, D, P on CABRI.
Download CABRIU data (d18) from here.