(7.0,8.0): non-interior
(8.5,1.0): non-interior
(7.0,-5.0): non-interior
(4.0,-3.0): interior
(1.0,-3.0): non-interior
(-4.0,-4.0): non-interior
(-2.0,-1.5): interior
(-5.0,3.0): non-interior
(-3.0,5.0): non-interior
(-2.1,3.0): interior