triangolo equilatero

A = (-4, -10)
B = (18, -10)
C = (2.070624421395756, 1.5470982911118392)
poli1, c, a, b = Polygon(A, B, C)
α = Angle(B, A, C)
β = Angle(A, C, B)
γ = Angle(C, B, A)