please help me with explanation.I thank all of you for helping me with my math questions.I just need more understanding about this question please​

please help me with explanationI thank all of you for helping me with my math questionsI just need more understanding about this question please class=

Respuesta :

Answer:

135°

Step-by-step explanation:

Since there are a pair of parallel lines, then

∠3 = ∠1  = 135° ( corresponding angles are congruent )