A = (2.12, 2.86)
B = (11.12, 3.12)
C = (5.46, 8.56)
mnogokut1, c, a, b = Polygon(A, B, C)
g = OrthogonalLine(A, a)
N_a = Intersect(g, a)
α = Angle(C, N_a, A)
h = OrthogonalLine(B, b)
N_b = Intersect(h, b)
γ = Angle(B, N_b, A)
f = OrthogonalLine(C, c)
N_c = Intersect(f, c)
β = Angle(B, N_c, C)
v_a = Segment(A, N_a)
v_b = Segment(B, N_b)
v_c = Segment(C, N_c)
O = Intersect(f, g)