A = (-2.36, 4.7)
B = (-4.14, -0.64)
C = (6.46, 0.64)
D = (1.42, 4.64)
E = Midpoint(A, D)
F = Midpoint(A, B)
G = Midpoint(B, C)
H = Midpoint(C, D)
α = Angle(E, F, G)
β = Angle(F, E, H)
γ = Angle(E, H, G)
δ = Angle(F, G, H)
Rööpkülik, l, k, n, m = Polygon(F, E, H, G)
Nelinurk, b, a, d, c = Polygon(B, A, D, C)