equilibre_trois_forces

C = (-7.619976219990257, 0.4240917905556085)
D = (-7.583584167573821, -2.5367767297464785)
F1 = Vector(C, D)
E = (-7.699135506090872, -6.8566591391992295)
F = (-7.66775085659177, -8.80250740814355)
F3 = Vector(E, F)
G = (-7.598360041473323, -3.563539143312574)
H = (-7.577659532834562, -5.566594169600473)
F2 = Vector(G, H)
I = (-4.043118566760943, 6.199728876892091)
J = (2.955658271538774, 2.449263261749432)
D3 = Segment(I, J)
K = (0.23760449987769944, 0.49078017378313554)
L = (-5.9347320251496365, 4.4212261083009325)
D1 = Segment(K, L)
M = (0.9307977179924669, 1.6390831075189305)
N = (-5.550132403572073, 5.49939499590845)
D2 = Segment(M, N)