Найдите градусную меру угла $$ABO$$.

Question

$$\angle ABO = \angle CBO + 20^{\circ} = 50^{\circ} + 20^{\circ} = 70^{\circ}$$

Ответ: 70

Accepted Answer

$$\angle ABO = \angle CBO + 20^{\circ} = 50^{\circ} + 20^{\circ} = 70^{\circ}$$

Ответ: 70