Answer:It seems there might be a slight misunderstanding in the way the angles are referred to. Angles in a polygon are typically denoted by a single letter representing the vertex (e.g., angle A, angle B, angle C) or by three letters (e.g., angle ABC, angle BCD, where the middle letter is the vertex).Could you please clarify what you mean by "angle ba" and "angle b polygon"? If you're referring to two specific angles within a polygon, please provide more context or a clearer description of the polygon and the angles you're interested in.Once I have a clearer understanding, I'll be happy to help you calculate the sum of their measures.