Răspuns :
Răspuns:
Explicație pas cu pas:
unghiurile
A=F
triunghiurile
ABK= FEL
AE=EF
caz 2 de congruenta
ULU
[tex]\it \left.\begin{aligned} \it \[[AB]\equiv\[[EF]\\ \\ \measuredangle B\ \equiv\ \measuredangle E\\ \\ \measuredangle A\ \equiv\ \measuredangle \bf F\end{aligned}\right\}\ \stackrel{ULU}{\Longrightarrow}\ \Delta ABK\ \equiv\ \Delta FEL[/tex]