r = 5.02 (slider from 0 to 10, step 0.01)
A = (2, 4)
d = Circle(A, 5)
D = Point(d)
K = (-3, 4)
f = Line(K, A)
c = Circle(K, 3.5)
g = Line(K, D)
B = Intersect(c, g, 2)
e = Circle(A, 4)
C = Intersect(e, f, 2)
h = Line(A, B)
i = Line(C, D)
k = Circle(D, r)
R = Intersect(k, g, 2)
j = Line(A, D)
l = Line(C, R)
kb = Segment(K, B)
ac = Segment(A, C)
da = Segment(A, D)
dr = Segment(D, R)
ska = Segment(K, A)
sbd = Segment(B, D)