A: (-9, -14)
straal = 3 (slider from 0 to 5, step 0.1)
c = Circle(A, straal)
B = Point(c)
f = Line(A, B)
g = OrthogonalLine(B, f)
C = Intersect(c, f, 2)
F = Point(g)
G = Point(g)
m = Segment(F, G)
hoekro = 2.007128639793479 rad (slider from 0 to 180°, step °)
G' = Rotate(F, (-hoekro), B)
h = Ray(B, G')
D = Intersect(c, h, 2)
β = Angle(F, B, D)
E = (-3, -13)
H = (-1, -13)
i = Segment(E, H)
E' = Rotate(E, (-hoekro), H)
γ = Angle(E, H, E')
k = Segment(B, D)
e = CircleArc(A, B, D)