Three vertices of parallelogram ABCD are (0,0), (5,2) and (8,5). What are the 3 possible locations of the fourth vertex?
look at the distance between the last two points (3,3)
this tells me the other point is 3,3 from 0,0, or the point is 3,3
this tells me the other point is 3,3 from 0,0, or the point is 3,3