Vectors question -- given points Lads, You're going to laugh at me, but I started my new unit today, and I forgot my dang textbook at school, I'm doing as much research online as I can, but I'm having a rough time figuring this guy out. Any insight would be very helpful! Thanks! 1. The problem statement, all variables and given/known data Given the points A(-3,1), B(4,7), C(9,2), and D(2,-4) prove algebraically that they form a parallelogram.