A = (-0.6144817108763027, 2.0801562081040084)
B = (-2.1943772362277776, 0.7050619545573551)
C = (0.6435832444961679, 0.7270049479650145)
Tên đa giác1, c, a, b = Polygon(A, B, C)
e = AngularBisector(B, A, C)
α = Angle(C, B, A)
β = Angle(A, C, B)