7. Zadatak

To su trokuti:

$\triangle AEF$, $\triangle BEF$, $\triangle CEF$, $\triangle DEF$

$\triangle ABE$, $\triangle ABF$,

$\triangle ACE$, $\triangle ACF$,

$\triangle ADE$, $\triangle ADF$,

$\triangle BCE$, $\triangle BCF$,

$\triangle BDE$, $\triangle BDF$,

$\triangle CDE$, $\triangle CDF$.