Răspuns :
[tex]\it a)\\ \\ \Delta ABC\sim \Delta MNP \Rightarrow \begin{cases} \it \hat A=\hat M=56^o\\ \\ \it \hat B=\hat N=72^o\\ \\ \it \hat C=\hat P=180^o-(56^o+72^o)=52^o\end{cases}[/tex]
[tex]\it b)\\ \\ \Delta ABC \sim \Delta MNP \Rightarrow \begin{cases} \it \dfrac{AB}{MN}= \dfrac{\ 10^{(5}}{15}=\dfrac{2}{3}=k\ (raport\ de\ asem\breve anare)\\ \\ \\ \it \dfrac{BC}{NP}= \dfrac{12}{NP}=\dfrac{2}{3} \Rightarrow NP= \dfrac{12\cdot3}{2} =18\ cm \\ \\ \\ \it \dfrac{AC}{MP}= \dfrac{14}{MP}=\dfrac{2}{3} \Rightarrow MP= \dfrac{14\cdot3}{2} =21\ cm\end{cases}[/tex]