M = (1.56, -3.58)
N = (21.68, 4.66)
a_1 = Line(M, N)
A = Point(a_1)
a = 6.3 (slider from 0 to 10, step 0.1)
b = 3.3 (slider from 0 to 10, step 0.1)
AB = 10 (slider from 0 to 15, step 0.1)
c = Circle(A, AB)
B = Intersect(c, a_1, 2)
e = Circle(A, a)
f = Circle(B, b)
C, D = Intersect(e, f)
E = Intersect(e, a_1, 2)
F = Intersect(f, a_1, 1)
g = Segment(A, E)
h = Segment(B, F)