Answer:
Step-by-step explanation:
55° and ∠4 are corresponding angles made by parallel lines. Therefore, they're congruent.
∠4 = 55°
Lines s and t are parallel lines and ∠4 and x are the interior angles at the same side of the transversal l. Therefore, they're supplementary.
∠4 + x = 180°
55° + x = 180°
x = 180° − 55° = 125°
