For the three-part question that follows, provide your answer to each part in the given workspace. Identify each part with a coordinating response. Be sure to clearly label each part of your response as Part A, Part B, and Part C. Use the image below to answer the following parts.

Three adjacent angles where the angles are represented as expressions.

Part A: What is the relationship between the angles shown? Explain.

Part B: What is the value of ? Show all work.

Part C: What is the measure of