Déplacer le point M à la souris sur le segment [BC].

A = (0, 3)
B = (-4, 0)
C = (9, 0)
a = Segment(A, B)
b = Segment(A, C)
c = Segment(B, C)
M = Point(c)
d = Segment(A, M)
U = (-10, 6.5)
V = (25, 6.5)
V' = (25, 25)
U' = (-10, 25)
g: y ≥ 5.5