A = (0.72, -0.28)
D = Point(Circle[A, 6])
f = Segment(A, D)
c = Circle(A, 3)
d = Circle(A, 8)
B = Point(c)
g = Segment(A, B)
h = Segment(B, D)
O = Midpoint(h)
e = Circle(A, 4)
i = Segment(A, O)
j = Line(B, f)
k = Line(D, g)
C = Intersect(j, k)
q1, b, e_1, d_1, a = Polygon(B, C, D, A)
α = Angle(D, A, B)
l = Distance(B, D)
texte1 = LaTeX(l, true, true)