Respuesta :

2x + 2x + x = 180°
5x = 180°
x = 36° (C)

Answer:

Step-by-step explanation:

The triangle sum therom states that the interior angles of a triangle add up to 180 degrees. So all you  have to do is make an equation 2x+2x+x=180 and solve from there.

Otras preguntas