Ответ:
1. ∠BOD = 6∠AOD. Пусть ∠AOD = x, тогда ∠BOD = 6x.
2. ∠AOB = ∠AOD + ∠BOD = x + 6x = 7x.
3. Если ∠AOB = 120°, то 7x = 120°, x = 120°/7. ∠AOD = 120°/7, ∠BOD = 6 * 120°/7 = 720°/7.
2. ∠AOB = ∠AOD + ∠BOD = x + 6x = 7x.
3. Если ∠AOB = 120°, то 7x = 120°, x = 120°/7. ∠AOD = 120°/7, ∠BOD = 6 * 120°/7 = 720°/7.
