(-2,-1) -> (-4,-2) -> (-4,1)
(-2,1) -> (-4,2) -> (-4,5)
(2,1) -> (4,2) -> (4,5)
This vertice was not specified, but it is easy to find (the 4th, as it needs four for it to be a rectangle
(2,-1) -> (4,-2) -> (4,1)
The vertices would be: (-4,1), (-4,5), (4,5), and (4,1)