Goodness me!!!!...what kind of math is that???..mama mia!!..
Melody, you have really gone the extra mile in trying to help me here!..I do appreciate this soooo much!, But this is my fault actually, because if I had mentioned in the beginning that PQRS was a parallelolgram, I'm sure you would not have spent so much time with this...Please accept my apology.
PES is definitely therefore a straight line...This one really has me speechless!