Final answer:
The question involves Mathematics, focusing on geometry and parallel lines. The angle measurement provided is 40°, but without context, it's not possible to determine the measurements of other angles related to lines AB and CD. Further details are needed to provide specific angle measurements.
Step-by-step explanation:
The subject of the question is Mathematics, specifically related to geometry involving angles and the properties of parallel lines. However, the question seems to be incomplete or might have a typo as it refers to an angle labeled '2' which is mentioned to be 40°, without a clear context. Assuming '2' refers to an angle in a geometry problem, the measurement of this angle would be 40°. In geometry, if line AB is parallel to line CD, corresponding angles and alternate interior angles created by a transversal intersecting these lines would also be equal due to the properties of parallel lines. Therefore, finding the measurement of each angle in the context of parallel lines would involve applying these geometric principles.
We cannot provide a more specific answer without further details on the given geometry problem. If additional information is provided, such as what the angle labeled '2' refers to or the positioning of the angles in relation to lines AB and CD, it would be possible to offer a more precise calculation.