Resposta :
[tex]\boxed{\boxed{d) \ 120\degree }}[/tex]
[tex]x + \dfrac{x}{3} + \dfrac{x}{6} = 180\\6x + 2x + x =1080\\9x = 1080\\x = \dfrac{1080}{9}\\x = 120[/tex]
[tex]\boxed{\boxed{d) \ 120\degree }}[/tex]
[tex]x + \dfrac{x}{3} + \dfrac{x}{6} = 180\\6x + 2x + x =1080\\9x = 1080\\x = \dfrac{1080}{9}\\x = 120[/tex]