r

r

r

A = (6.576418604651163, -1.673162790697674)
B = (11.89734883720932, -1.6526976744186044)
c = Semicircle(A, B)
f = Segment(A, B)
a = LineBisector(A, B)
M = Intersect(a, f)
Ziehen = 1.6406094968746698 rad (slider from 0 to 3.141592653589793, step 0.017453292519943295)
C = Rotate(B, Ziehen, M)
β = Angle(B, M, C)
b = Segment(C, B)
d = Segment(C, A)
γ = Angle(A, C, B)
e = Segment(C, M)
g = Segment(M, B)
h = Segment(M, A)
α = Angle(A, C, M)
δ = Angle(M, A, C)
ε = Angle(M, C, B)
ζ = Angle(C, B, M)