O = (0.52, 1.18)
Β = (3.62, 3.16)
c = Circle(O, Β)
Γ = Point(c)
a = Line(Γ, O)
A, B = Intersect(c, a)
b = Segment(Γ, B)
d = Segment(Γ, B)
εφαπτομένη = OrthogonalLine(Γ, b)
M = Point(c)
f = Segment(B, M)
g = Segment(M, Γ)
α = Angle(M, Γ, O)
τέμνουσα = Line(Γ, M)
β = Angle(O, B, M)
e = CircleArc(O, Γ, M)
γ: α + β