A = Point(xAxis)
O = Intersect(xAxis, yAxis)
α = 0.8063421144213803 rad (slider from 0 to 6.283185307179586, step 0.0017453292519943296)
a = Ray(O, A)
A' = Rotate(A, α, O)
β = Angle(A, O, A')
k = Ray(O, A')
B = Point(a)
b = Ray(A, B)
B' = Rotate(B, 2.0 * α, A)
γ = Angle(B, A, B')
m = Ray(A, B')
S = Intersect(k, m)