A = (1.6711111111111108, 1.488888888888889)
B = (6.6711111111111085, 1.488888888888889)
polygon1, c, a, b, C = Polygon(A, B, 3)
D = (3.7622222222222206, 2.82)
i = OrthogonalLine(D, b)
j = OrthogonalLine(D, a)
k = OrthogonalLine(D, c)
E = Intersect(b, i)
F = Intersect(j, a)
G = Intersect(c, k)
l = Segment(D, E)
m = Segment(D, F)
n = Segment(D, G)
afstandDE = Distance(D, E)
afstandDF = Distance(D, F)
afstandDG = Distance(D, G)
α = Angle(D, E, C)
β = Angle(C, F, D)
γ = Angle(B, G, D)