B = (10.352513139263065, 8.190418469581367)
A = (1.744243781310074, 8.22954696666297)
đa giác1, a, b, c, d, D, C = Polygon(B, A, 4.0)
α = Angle(B, C, D)
β = Angle(C, D, A)
γ = Angle(D, A, B)
δ = Angle(A, B, C)