We can see the Vertically Opposite Angles are __________________.

A = (6.564034758986839, 2.191962788712652)
B = (19.34, -5.7)
C = (20.636850955007972, 1.6487106929103659)
D = (4.84, -6.4)
f = Segment(A, B)
g = Segment(C, D)
E = Intersect(g, f)
α = Angle(B, E, C)
β = Angle(A, E, D)
γ = Angle(C, E, A)
δ = Angle(D, E, B)