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Sagot :

Exercice 1 :
(15x7)/8 = 13,125
(12x7)/15 = 5,6
(9x11)/3 = 33

Exercice 2 :
GA/GL = GE/GK = AE/LK



GA/GL = GE/GK
5,4/GL = 3/5
Donc GL=(5,4x5)/3 = 9 cm


AE/LK = GE/GK
3/5 = AE/11
Donc AE = (11x3)/5 = 6,6cm

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