A = (1, 1)
B = (3, 3)
C = (0.64, 4.2)
D = (-1, 2.36)
poly1, b, c, d = Polygon(C, D, B)
C' = Dilate(C, 2, A)
D' = Dilate(D, 2, A)
B' = Dilate(B, 2, A)
poly1', b', c', d' = Polygon(C', D', B')