\frac{a}{\sin\alpha}=\frac{b}{\sin\beta}=\frac{c}{\sin\gamma}=2r

A = (-0.3, 0.26)
B = (6.4502, 0.0756)
C = (3.82, 3.8)
polígono1, c, a, b = Polygon(A, B, C)
α = Angle(B, A, C)
β = Angle(C, B, A)
γ = Angle(A, C, B)
d = Circle(A, B, C)