Číslo kroku

A = (7.783178911848521, -1.7715217467594147)
B = (12.26, -2)
c = Circle(A, B)
C = (8.64, -0.98)
d = Circle(C, B)
c' = Mirror(c, d)
f = Tangent(B, c')
f' = Mirror(f, d)
a = 0 (slider from 0 to 5, step 1)