Реши задачи на измерение углов

1. \(\angle AOB = 120^{\circ} / 4 = 30^{\circ}\), \(\angle BOC = 120^{\circ} - 30^{\circ} = 90^{\circ}\) 2. \(\angle AOB = 150^{\circ} / 5 = 30^{\circ}\), \(\angle BOC = 150^{\circ} - 30^{\circ} = 120^{\circ}\) 3. \(\angle COD = 180^{\circ} - 125^{\circ} - 25^{\circ} - 20^{\circ} = 10^{\circ}\) 4. \(\angle COB = 180^{\circ} - 130^{\circ} - 20^{\circ} - 45^{\circ} = -15^{\circ}\) Не сходится, проверь условие. 5. \(\angle AOB = 3 \angle BOC\), \(\angle AOB + \angle BOC = 120^{\circ} / 2 = 60^{\circ}\), \(\angle BOC = 60^{\circ} / 4 = 15^{\circ}\), \(\angle AOB = 45^{\circ}\) 6. \(\angle AOD = 150^{\circ} / 4 = 37.5^{\circ}\), \(\angle BOD = 150^{\circ} / 2 + 37.5^{\circ} = 112.5^{\circ}\) 7. \(\angle AOC = 80^{\circ} / 3\), \(\angle AOB = 80^{\circ} / 3 * 3 = 80^{\circ}\) 8. \(\angle AOC = 60^{\circ} / 4\), \(\angle AOB = 60^{\circ} / 4 * 4 = 60^{\circ}\)