Respuesta :

Answer:

80°

Step-by-step explanation:

Answer:

  • B. 80°

Step-by-step explanation:

The triangle in the middle has angles that:

  • Supplementary with 110°
  • Supplementary with 150°
  • Same with x, as alternate exterior angles are congruent

Interior angles of a triangle sum to 180°

Find x:

  • x + (180° - 110°) + (180° - 150°) = 180°
  • x + 70° + 30° = 180°
  • x + 100° = 180°
  • x = 80°

Correct choice is B

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