lines m and n are parallel. If m∠2 = 150°, find the measure of the following angles

In the diagram, lines m and n are parallel. If m∠2 = 150°, find the measure of the following angles.

∠4 = ?
A. 120º
B. 50º
C. 30º
D. 150º

1 answer

No idea where angle 4 is, but you need to recall that
vertical angles are congruent
alternate int/exterior angles are congruent
adjacent angles are supplementary
etc.

Time to review your theorems on parallel lines and their transversals