Răspuns:
AB/ED=AC/DF=BC/EF ; 8/6=16/EF; EF= 6 x 16/8=12
Explicație pas cu pas:
[tex]\it \Delta ABC\sim \Delta\ {D\ EF} \Rightarrow \dfrac{AB}{DE}=\dfrac{BC}{EF} \Rightarrow \dfrac{8}{6}=\dfrac{16}{EF} \Rightarrow EF=\dfrac{6\cdot16}{8}=6\cdot2=12\ cm[/tex]
