\[\boxed{\mathbf{1.}\mathbf{131}}\]
\[360\ :12 = 30{^\circ} - угол,\ который\ \]
\[соответствует\ 1\ ч.\]
\[\textbf{а)}\ 6\ ч:\]
\[6 \cdot 30 = 180{^\circ}.\]
\[\textbf{б)}\ 3\ ч:\]
\[3 \cdot 30 = 90{^\circ}.\]
\[\textbf{в)}\ 13\ ч\ (1\ ч): -\]
\[30{^\circ}.\]
\[\textbf{г)}\ 10\ ч\ (2\ ч):\]
\[2 \cdot 30 = 60{^\circ}.\]