O = (2, 3)
c = Circle(O, 4)
A = Point(c)
a = Line(A, O)
B = Intersect(c, a, 2)
M = Point(c)
b = Ray(M, B)
d = Circle(B, M)
R = Intersect(d, b, 2)
e = Ray(M, A)
f = Circle(A, M)
S = Intersect(f, e, 2)
g = Line(A, b)
h = Line(B, e)
T = Intersect(c, g, 2)
i = Line(S, R)
j = Segment(A, B)
C = (-12, 3)
D = (-2, 3)
k = 9 (slider from 0 to 9, step 1)
l = false
E = Point(c)
m = Segment(O, E)