help plz!
lines a and b are parallel m∠4=

The angle 4 and 120 degrees angles are alternate angles. Therefore, ∠4 = 120 degrees.
Alternate interior angles are the angles formed when a transversal intersects two parallel lines.
Alternate interior angles are the angles formed on the opposite sides of the transversal.
Alternate interior angles are congruent.
Therefore,
∠4 is an alternate interior angle to angle 120 degrees.
Therefore,
∠4 = 120 degrees.
learn more on alternate interior angles here: brainly.com/question/14693114
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