O = (-5, -3)
A = (-2, -5)
B = (-2, -2)
a = Segment(A, B)
C = (0, 0)
D = (-2, 2)
E = (-4, 0)
poly1, b, c, d, e = Polygon(B, C, D, E)
F = Point(d)
f = CircleSector(F, D, E)
G = Point(c)
g = CircleSector(G, C, D)
k = 3 (slider from -5 to 5, step 0.1)
A' = Dilate(A, k, O)
B' = Dilate(B, k, O)
a' = Segment(A', B')