Respuesta :

vialia

Answer:

70°

Step-by-step explanation:

All triangles' angles are added up to 180°

30 + 80 + x = 180

110 + x = 180

x = 180 - 110

x = 70

MalakYaqoot

Answer:

[tex]x = 70[/tex]

Step-by-step explanation:

[tex]x = 180 - (30 + 80)[/tex]

[tex]x = 180 - 110[/tex]

[tex]x = 70[/tex]

to be sure

[tex]70 + 80 + 30 { = }^{?} 180[/tex]

[tex]100 + 80 { = }^{?} 180[/tex]

[tex]180 = 180[/tex]