Respuesta :

Answer:

90°

Step-by-step explanation:

The three angles : 45°, n°, and 45° will form a line.

A property of a line is that it creates a 180° angle.

  • ⇒ 45 + n + 45 = 180
  • ⇒ n + 90 = 180
  • ⇒ n = 90°