--> Python ∼ Quadrilatère x1 = 5 y1 = -1 x2 = -2 y2 = 3 x3 = 10 y3 = 12 x4 = 5 y4 = -8 xm1 = (x1+x3)/2 ym1 = (y1+y3)/2 xm2 = (x2+x4)/2 ym2 = (y2+y4)/2 if xm1 == xm2 and ym1 == ym2: print("para") else: print("non para")