Răspuns :
a) m(∡F) = 80°
b) DF=18 cm
Rezolvare :
ΔABC ≈ ΔDEF
a) m(∡A)=40° , m(∡B)=60°
m(∡F)=m(∡C) =>m(∡C)=180°-(40°+60°)=180°-100°=80°=>m(∡F)=80°
b)
AB/DE=2/3
AC=18 cm
DF=?
Daca ΔABC ≈ ΔDEF => AB≡DE , BC≡FE , AC≡DF
DF=AC => DF=18 cm
