Respuesta :

Let's find the value of x :

from the above figure, we can infer that Angle 4 is equal to Angle 8, since they form corresponding Angle pair.

  • [tex]77 = 4x + 57[/tex]

  • [tex]4x = 77 - 57[/tex]

  • [tex]4x = 20[/tex]

  • [tex]x = 20 \div 4[/tex]

  • [tex]x = 5[/tex]

hence, value of x = 5°