Final answer:
The measure of Angle 3 cannot be accurately calculated without more context or information regarding the relationship between Angle 1, Angle 2, and Angle 3.
Step-by-step explanation:
To determine the measure of Angle 3, we need more information about the context in which these angles exist, such as whether these angles are part of the same figure or different figures and the relationships between them. However, based on the information given, which does not explain how Angle 1 and Angle 2 are related to Angle 3, it is not possible to accurately calculate the measure of Angle 3. If Angle 1 and Angle 2 are supplementary angles (angles that add up to 180°) or angles of a triangle (which add up to 180°), then we could do some math to find out Angle 3. But unfortunately, without additional information or context, we cannot provide an answer to this problem.