straal = 3 (slider from 0 to 5, step 0.1)
stap = 11 (slider from 0 to 11, step 1)
A = (0, -3)
c = Circle(A, straal)
B = Point(c)
f = Ray(B, A)
C = Point(c)
g = Ray(C, A)
D = Intersect(c, g, 2)
E = Intersect(c, f, 2)
h = Segment(C, A)
i = Segment(D, A)
j = Segment(A, E)
k = Segment(B, A)
α = Angle(C, A, B)
l = OrthogonalLine(B, k)
m = OrthogonalLine(D, i)
n = OrthogonalLine(E, j)
p = OrthogonalLine(C, h)
F = Intersect(m, n)
G = Intersect(n, p)
H = Intersect(l, p)
I = Intersect(l, m)
q = Segment(H, I)
r = Segment(I, F)
s = Segment(F, G)
t = Segment(G, H)
β = Angle(B, H, C)
γ = Angle(C, G, E)
δ = Angle(E, F, D)
ε = Angle(D, I, B)
ζ = Angle(A, B, H)