[tex]\it Compar\breve am\ \Delta ABC\ cu\ \Delta CDA:\\ \\ \begin{cases} \it AB\equiv CD\ \ (ip)\\ \\ \widehat{BAC}\equiv \widehat{ACD}\ \ (ip)\\ \\ AC\ -\ latur\breve a\ comun\breve a\end{cases}\ \stackrel{LUL}{\Longrightarrow}\ \Delta ABC\equiv \Delta CDA[/tex]
