Respuesta :

gmany
Look at the picture.

The sum of measures of the angles in a triangle is equal 180°.
Therefore we have the equation:
[tex]2y^o+50^o=180^o\ \ \ |-50^o\\\\2y^o=130^o\ \ \ |:2\\\\y^o=65^o[/tex]
Answer: 65°
Ver imagen gmany