Area and Perimeter
When plotting (2, 2); (-2, 2); (-4, -2); and (4, -2), then connecting the dots, a trapezoid is formed.
A triangle with the coordinates (0, 5); (-3, 7); and (1, 7) has an area of 4 square units.
In order to make a rectangle with the coordinates (6, 4); (8, 4); and (6, 1) the fourth point must be at (8, 1).