alpha

beta

gamma

Somma

A = (2.34, 1.82)
B = (3.22, 4.6000000000000005)
C = (6.12, 2.54)
poli1, c, a, b = Polygon(A, B, C)
α = Angle(C, A, B)
β = Angle(A, B, C)
γ = Angle(B, C, A)
A2 = Angle(C, A, B)
B2 = Angle(A, B, C)
C2 = Angle(B, C, A)
D2 = Sum(A2:C2)
d = Line(B, C)
e = Line(A, C)
f = Line(B, A)