Respuesta :

Answer:

135

Step-by-step explanation:

1 and 4 are vertical angles. Because lines b and c are parallel, 5 and 8 must also be vertical angles. Not only that but they must be the same vertical angles. 1, 4, 5, and 8 are all 135 degrees.

Answer:

135°

Step-by-step explanation:

Hope this helps.

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