Calculer l'aire d'un triangle simpleExercice

A = 13 cm²

A = 20 cm²

A = 40 cm²

A = 6{,}5 cm²

A = 48 cm²

A = 24 cm²

A = 14 cm²

A = 7 cm²

A = 6{,}5 cm²

A = 40 cm²

A = 20 cm²

A = 13 cm²

A = 8{,}5 cm²

A = 35 cm²

A = 17 cm²

A = 70 cm²

A = 10 cm²

A = 5 cm²

A = 12{,}5 cm²

A = 25 cm²