A = (-1.5633338792431606, -3.2426443656044235, 0)
B = (0.8971907180445413, -4.513979907732345, 0)
C = (2.02993388467989, -0.9575865588861205, -1.1493119942739831)
D = (-1.5595825322166537, -0.7440257772393934, 0.46823821988940395)
E = (-1.1693628701811534, 3.796562867578377, 2.7567621508984086)
f = Line(D, E)
a = Plane(A, C, B)
g = OrthogonalLine(D, a)
h = OrthogonalLine(E, a)
F = Intersect(g, a)
G = Intersect(h, a)
i = Line(F, G)
α = Angle(f, i)
j = Line(F, B)
k = Line(G, C)
β = Angle(g, i)
γ = Angle(g, j)
δ = Angle(h, i)
ε = Angle(h, k)