Respuesta :

reinhard10158

Step-by-step explanation:

the sum of all angles in a triangle is always (ALWAYS !) 180°.

180 = 31 + 35 + x = 66 + x

x = 180 - 66 = 114°

[tex]31\textdegree + 35\textdegree + x \textdegree= 180\textdegree[/tex]

[tex]66\textdegree + x\textdegree = 180\textdegree[/tex]

[tex]x\textdegree = 180 \textdegree- 66\textdegree[/tex]

[tex]x \textdegree= 114\textdegree[/tex]

I hope that I helped you!