A = (-0.6, 3.44)
B = (-1.2, 0.52)
C = (1.7, -1.26)
poli1, c, a, b = Polygon(A, B, C)
D = (2.12, 5.64)
E = (2.34, 0.48)
d = Line(D, E)
A' = Mirror(A, d)
B' = Mirror(B, d)
C' = Mirror(C, d)
poli1', c', a', b' = Polygon(A', B', C')
e = Segment(A, A')
F = (6.56, 4.46)
G = (6.88, -2.3)
f = Line(F, G)
A'' = Mirror(A', f)
B'' = Mirror(B', f)
C'' = Mirror(C', f)
poli1'', c'', a'', b'' = Polygon(A'', B'', C'')
u = Vector(C, C'')