A = (4, 0)
O = (0, 0)
c_1 = Circle(O, A)
c = Circle(A, O)
B = Intersect(c_1, c, 1.0)
F = Intersect(c_1, c, 2.0)
c_2 = Circle(B, A)
C = Intersect(c_1, c_2, 2.0)
c_3 = Circle(C, B)
D = Intersect(c_1, c_3, 1.0)
c_4 = Circle(D, C)
E = Intersect(c_1, c_4, 2.0)
AB = Segment(A, B)
BC = Segment(B, C)
CD = Segment(C, D)
DE = Segment(D, E)
EF = Segment(E, F)
FA = Segment(F, A)