B = (4.501024069074463, -1.030858725761806)
C = (3, 3)
F = (8, 3)
lengtero = 5.2 (slider from 0 to 8, step 0.1)
hellingro = 1.2740903539558606 rad (slider from 0 to 90°, step °)
lengtebl = 4.7 (slider from 0 to 8, step 0.1)
hoekzw = 0.8552113334772214 rad (slider from 0 to 170°, step °)
k = Line(C, F)
G = Point(k)
G' = Rotate(G, hellingro, C)
γ = Angle(G, C, G')
l = Ray(C, G')
c = Circle(C, lengtero)
H = Intersect(c, l)
g = Segment(H, C)
m = Line(F, l)
d = Circle(F, g)
I, J = Intersect(d, m)
j = Segment(J, F)
A' = Rotate(H, hoekzw, C)
n = Ray(C, A')
p = Line(F, n)
e = Circle(C, lengtebl)
D = Intersect(e, n)
i = Segment(C, D)
f = Segment(H, D)
α = Angle(H, C, D)
q = Circle(F, i)
K, L = Intersect(q, p)
a = Segment(F, L)
h = Segment(J, L)
β = Angle(J, F, L)