given the four points:
A= (1,4,-2) B=(5,6,-2) C=(3,0,2) D=(7,2,2)
show that ABCD is a parallelogram using vectors.
is it a parallelogram? square? rhombus?
if I'm correct, in order for vectors to be parallel, they must be scalar multiples of one another. So i found the vectors of these points, but I got
vector AB= <4,2,-4>
vector CD= <4,2,0>
vector AD= <-6,2,4>
not sure what I did wrong