\[\boxed{\mathbf{1.}\mathbf{116}\mathbf{.\ ОК\ ГДЗ - домашка\ на\ }5}\]
Пояснение.
Развернутый угол равен 180°.
Решение.
\[Пусть\ x{^\circ} - меньший\ угол.\ \]
\[\textbf{а)}\ x + 2x = 180\]
\[3x = 180\]
\[x{^\circ} = 60{^\circ} - \angle POS.\]
\[2 \cdot 60{^\circ} = 120{^\circ} - \angle SOT.\]
\[\ \angle POS = 60{^\circ};\ \]
\[\angle SOT = 120{^\circ}.\]
\[\textbf{б)}\ x + x + 80 = 180\]
\[2x = 100\]
\[x = 50{^\circ} - \angle SOT.\]
\[50 + 80 = 130{^\circ} - \angle POS.\ \]
\[\textbf{в)}\ x + 5x = 180\]
\[6x = 180\]
\[x = 30{^\circ} - \angle POS.\]
\[30 \cdot 5 = 150{^\circ} - \angle SOT.\]