Question

Exercițiul noua va rog
Repede dau coroana
Ca ma prinde profa

Answer 1

Triunghiul ABC isoscel⇒AB=AC
AB+BC+AC=23 cm
a) AB+AC=18 cm
AB+AB=18 cm
AB+BC+AC=23 cm
AB+AB+BC=23 cm
18 cm+BC=23 cm
BC=23-18
BC=5 cm

b)AB+BC=14 cm
AB+BC+AC=23 cm
14 cm+AC=23 cm
AC=23-14
AC=9 cm⇒AB=9 cm
BC=23 cm-(9cm+9cm)
BC=23 cm-18 cm
BC=5 cm

Sper ca te-am ajutat!
Coroana, te rog!