O = (4.3, 4.2)
a = 6
c = Circle(O, a)
A = Point(c)
B = Point(c)
C = Point(c)
D = Point(c)
E = Point(c)
F = Point(c)
b = Line(A, E)
d = Line(D, B)
e = Line(B, F)
f = Line(E, C)
g = Line(C, D)
h = Line(A, F)
I = Intersect(b, d)
J = Intersect(e, f)
K = Intersect(h, g)
i = Line(I, J)