Find Angles formed by Parallel Lines and a Transversal

The video tutorial explains how to solve a math problem involving parallel lines and a transversal. It begins by labeling the diagram and identifying corresponding angles, which are congruent. The tutorial then calculates the measure of angle 2 by using the concept of supplementary angles, which together form a straight line summing to 180 degrees. The solution concludes that angle 2 measures 60 degrees.

How do you label angles in a diagram of parallel lines cut by a transversal?

What is the relationship between angle 1 and angle 2 in this scenario?