Animer le point C

O = (5.7, 0.34)
B = (5.76, 5.28)
c = Circle(O, B)
A = Point(c)
C = (9.82, 3.1)
A' = Point(c)
B' = Point(c)
d = Conic(A, B, C, B', A')
C' = Point(d)
a = Line(A, B')
b = Line(A', B)
e = Line(A, C')
f = Line(A', C)
g = Line(B, C')
h = Line(B', C)
F = Intersect(a, b)
E = Intersect(e, f)
D = Intersect(g, h)
i = Line(F, E)