A = (52.7780679302461, 13.136892700793645)
B = (49.444946034846716, 1.9917663630519158)
C = (79.23472297497881, 1.991766363051915)
đa giác1, c, a, b = Polygon(A, B, C)
f = Distance(b, c)
d = Line(A, C)
e, g = AngularBisector(c, b)
h = Line(B, C)
D = Point(d)
i = Ray(A, D)
D' = Intersect(e, h)
α = Angle(D, A, D')
β = Angle(D', A, B)
j = Line(B, i)
E' = Intersect(e, j)
k = Segment(E', B)
γ = Angle(B, E', A)