Respuesta :

Answer:

[tex]\huge\boxed{\sf c = 62\°}[/tex]

Step-by-step explanation:

c + 135 + 87 + 76 = 360° (Angles at a point add up to 360°)

c + 298 = 360

Subtract 298 to both sides

c = 360 - 298

c = 62°

[tex]\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807