A = Intersect(xAxis, yAxis)
c = Circle(A, 1)
B = Intersect(c, xAxis, 2)
b = 0.17 (slider from 0 to 2, step 0.01)
D = Intersect(c, xAxis, 2)
D' = Rotate(D, (b * π), A)
γ = Angle(D, A, D')
k = Segment(A, D')
l = OrthogonalLine(D', xAxis)
E = Intersect(l, xAxis)
q = Segment(A, E)
r = Segment(D', E)
d = OrthogonalLine(A, k)
α = Angle(D, A, D')
texte4 = LaTeX(α, true, true)
E' = Rotate(E, π - (b * π), A)
f = Segment(A, E')
g = Ray(A, E')
E'_1 = Rotate(E, π / 2 - (b * π), A)
β = Angle(E, A, E'_1)
h = Ray(A, E'_1)
C = Intersect(c, h)
i = Segment(A, C)
j: y = x
m = OrthogonalLine(C, yAxis)
F = Intersect(m, yAxis)
n = Segment(C, F)