A = (3, 0, 0)
O = (0, 0, 0)
a = Sphere(O, A)
B = (0, 0, 3)
b = Segment(O, B)
c = Circle(b, A)
P' = Point(c)
d = Segment(O, P')
e = OrthogonalLine(O, d, space)
f = Plane(P', O, B)
g = OrthogonalLine(O, f)
h = Circle(g, P')
P = Point(h)
i = Vector(O, P)
u = Angle(A, O, P')
v = Angle(P', O, P)