[tex]it \Delta MNP\ -\ isoscel,\ cu\ \ MN=MP \Rightarrow \hat N=\hat P\\ \\ Compar \breve{a} m\ \ \Delta MDN\ cu\ \Delta\ MEP \begin{cases}\it MN=MP\\ \\ \ip \hat N=\hat P\\ \\ ND=EP\end{cases} \stackrel{LUL}{\Longrightarrow} \Delta MDN\ \equiv\ \Delta\ MEP[/tex]
