Figuur III

F = (0, -22)
straal = 3 (slider from 0 to 5, step 0.1)
e = Circle(F, straal)
L = Point(e)
J = Point(e)
f_1 = Ray(J, F)
N = Intersect(e, f_1, 2)
d_1 = CircleArc(F, N, L)
P = Point(d_1)
e_1 = CircleArc(F, J, P)
O = Point(e_1)
veelhoek1, j_1, l_1, p_1, o = Polygon(J, L, P, O)
η = Angle(J, L, P)
θ = Angle(P, O, J)
ι = Angle(O, J, L)
κ = Angle(L, P, O)