Uhol FSF' v pravidelnom hranole

\( \normalsize\left|\sphericalangle{{FSF^{\prime}}}\right|\doteq50\degree10^{\prime} \)
\( \normalsize\left|\sphericalangle{{FSF^{\prime}}}\right|\doteq60\degree25^{\prime} \)
\( \normalsize\left|\sphericalangle{{FSF^{\prime}}}\right|\doteq56\degree19^{\prime} \)
\( \normalsize\left|\sphericalangle{{FSF^{\prime}}}\right|\doteq45\degree30^{\prime} \)