Réponse :
a. AB = AM + MB = x + 6
b. AB = AC - BC = 8 - x
c. AB = AC + CD + DE + EF + FB or AC = CD = DE = EF = FB = x
alors AB = x + x +x +x +x = 5x
d. AB = AG + GH + HB or AG = GH = x
alors AB = x + x + 5 = 2x +5
e. MN = x et MA = AB = BC = CD = DN et MN = MA + AB + BC + CD + DN
alors AB = (1/5)x
f. AB = AC + CM + MN + NB or CM = MN = NB = 2
alors AB = x + 2 + 2 +2
AB = x +6
