z

a

b

r

w+z

w

z-w

w

\overline{w}

w+\overline{w}\in \mathbb R

A = (5, 2)
O = Intersect(xAxis, yAxis)
Re_z: (x(A), 0)
Im_z: (0, y(A))
u = Vector(O, A)
φ = Angle(Re_z, O, A)
f = Segment(A, Re_z)
g = Segment(O, Re_z)
w = (-2, 1)
v = Vector(O, w)
w_1: u + v
B: w + A
h = Segment(w, B)
i = Segment(B, A)
C = (2, 3)
a = Vector(O, C)
b = Vector(C, A)
O' = Translate(O, b)
c = Vector(O, O')
D = (3, 2)
j = Segment(C, D)
k = Segment(D, A)
E = Point(yAxis)
l = Segment(O, E)
m = Segment(E, O')
C' = Mirror(C, xAxis)
d = Vector(O, C')
e: d + a
n = Segment(C, C')