Romboid

A = (-2.52, 2.24)
B = (2.48, 0.54)
a = Segment(A, B)
C = (1.92, 3.7)
b = Line(B, C)
c = Line(C, a)
d = Line(A, b)
D = Intersect(d, c)
mnogokotnik1, a_1, b_1, c_1, d_1 = Polygon(A, B, C, D)
α = Angle(B, A, D)
β = Angle(C, B, A)
γ = Angle(D, C, B)
δ = Angle(A, D, C)