A = (-7, -5)
B = (-2, -3)
C = (-6, 6)
P, c, a, b = Polygon(A, B, C)
C' = (4, 4)
v = Vector(C, C')
B': B + v
A': A + v
u = Vector(B, B')
w = Vector(A, A')
Q, b', c', a' = Polygon(C', A', B')