G:((1.98 * 2), (5.9 * 2))
G':((1.98 * 2), (1.88 * 2))
T:((1.3 * 2), (4.87 * 2))
T':((2.15528 * 2), (6.3725 * 2))
traction = Vector(T, T')
poids = Vector(G, G')
S:((3.28 * 2), (2.14 * 2))
S':((2.42878 * 2), (4.66108 * 2))
reaction = Vector(S, S')
A:((0 * 2), 2)
B:((9 * 2), 2)