A = Intersect(xAxis, yAxis)
B = Point(xAxis)
c = Circle(A, B)
C = Point(c)
α = Angle(B, A, C)
f = Segment(C, A)
D = Intersect(c, xAxis, 2)
β = Angle(C, A, D)
g: y = y(C)
E, F = Intersect(c, g)
piimiinusα = Angle(B, A, E)
h = Segment(E, A)
eq1: x = x(C)
G, H = Intersect(c, eq1)
miinusα = Angle(H, A, B)
i = Segment(A, H)