afstand = 1.5 (slider from 0 to 3, step 0.1)
straal = 2.5 (slider from 0 to 4, step 0.1)
A = (-8, -15)
c = Circle(A, straal)
d = Circle(A, straal + afstand)
B = Point(c)
f = Line(A, B)
C = Intersect(d, f, 2)
g = OrthogonalLine(B, f)
D = Intersect(d, g, 2)
h = Segment(D, B)
i = Segment(C, B)
j = Segment(B, A)
k = Line(D, A)
E = Intersect(c, k, 1)
l = Segment(D, E)
m = Segment(E, A)
α = Angle(A, B, D)
n = Segment(E, C)
β = Angle(C, E, A)
γ = Angle(D, A, C)
stap = 7 (slider from 0 to 7, step 1)