O = Intersect(xAxis, yAxis)
U = Point(xAxis)
V = Point(yAxis)
u = Vector(O, U)
v = Vector(O, V)
i = (0, 1)
A = (-1.5, 0.8660254037844386)
B: x(A) - i * y(A)
C = Point(xAxis)
a = Segment(C, A)
b = Segment(A, B)
c = Segment(B, C)
d = Line(B, A)
M = Point(d)
z: x(M) + i * y(M)
z': 1 / 3 * i * z^(2)
M': z'