(02.06)in the figure below, lines m and n are parallel:

two parallel lines are shown crossed by a transversal. the angles are labeled with number 1-8. the angles on line m where the line is crossed by the transversal are 1, 2, 3, and 4 in clockwise order from top left. the angles on line n where the line is crossed by the transversal are 5, 6, 7, and 8 in clockwise order from top left.

in the diagram shown, ∠2 measures 77 degrees. what is the measure of ∠4?

5 degrees
77 degrees
103 degrees
180 degrees