In a parallelogram ABCD, P & Q are mid-points of AB and DC respectively.

AB//PQ//DC. Join diagonal AC. AC and PQ intersect at R. Join BQ. RC and BQ intersect at S. If AS= 20cm, find,

1. triangle CQR: triangle SCQ,

2. triangle SCQ:triangle RSQ,

3. quadrilateral ASQD: //gm ABCD.

Somebody plz help me with this sum...I had tried it a million times but to no avail....