Respuesta :

mhanifa

Answer:

  • 8) 76°
  • 9) 88°

Step-by-step explanation:

  • Sum of exterior angles of any polygon is 360°

Exercise 8

Sum of given angles:

  • 2x + 60° + 64° + 36° + 48° = 360°
  • 2x + 208° = 360°
  • 2x = 360° - 208°
  • 2x = 152°
  • x = 76°

Exercise 9

Sum of given angles:

  • x + 90° + 109°+ 73° = 360°
  • x + 272° = 360°
  • x = 360° - 272°
  • x = 88°