O = Intersect(xAxis, yAxis)
A = Point(yAxis)
f = Line(A, xAxis)
B = Point(f)
C = Mirror(A, B)
D = Mirror(B, C)
E = Mirror(C, D)
g = Segment(A, B)
h = Segment(B, C)
i = Segment(C, D)
j = Segment(D, E)
k = Segment(O, A)
l = Segment(O, B)
m = Segment(O, C)
n = Segment(O, D)
p = Segment(O, E)
α = Angle(E, O, D)
β = Angle(D, O, C)
γ = Angle(C, O, B)
δ = Angle(B, O, A)