Eksempel 36 side 41

A = (1, 1)
D = Point(Circle[A, 34])
a = Segment(A, D)
D' = Rotate(D, 25*°, A)
α = Angle(D, A, D')
b = Ray(A, D')
c = Ray(A, D)
E = Point(c)
E' = Rotate(E, 30*°, D)
β = Angle(E, D, E')
d = Ray(D, E')
B = Intersect(b, d)
e = OrthogonalLine(B, c)
C = Intersect(e, c)
f = Segment(B, C)
γ = Angle(B, C, E)