F1 = (-5.0600000000000005, -0.44)
F2 = (-0.3, 1.7)
M = Midpoint(F1, F2)
a = 3.3 (slider from 2 to 12, step 0.1)
c = Ellipse(F1, F2, a)
d = Circle(F2, 2.0 * a)
P = Point(d)
b = Segment(F2, P)
e = Segment(F1, P)
A = Intersect(c, b)
f = Tangent(A, c)
g = Segment(F1, A)
B = Intersect(e, f)
C = Midpoint(P, F1)
h = Circle(M, C)