a = 2 (slider from 1 to 5, step 0.1)
O = (2.8, 0.3225)
c = Circle(O, a)
A = (0.78, -0.0975)
p = Circle(A, a)
d = Circle(O, 2 * a)
e = Circle(A, 3 * a)
B, F = Intersect(p, c)
b = Ray(A, B)
C = Intersect(e, b, 1)
f = Line(O, b)
g = Segment(B, O)
D = Intersect(d, f, 2)
h = Ray(C, D)
k = Circle(D, 2 * a)
E = Intersect(k, h, 1)
i = Segment(A, C)
j = Segment(C, E)
l = Segment(D, O)