Răspuns:
Explicație pas cu pas:
ΔABC≈ΔDEF AB=8 cm; AC=10 cm; BC=5cm DE=88cm
AB/DE=BC/EF=AC/DF =8/88=1/11
BC/EF=1/11 EF=BC×11=5×11=55cm
AC/DF=1/11 DF=11AC=11x10=110 cm
