Respuesta :

The interior angles of the triangle add up to 180.

Two of the angles are given, we need to add those two and subtract the sum by 180.

∠x = 180 -(65 + 65) 
∠x = 180 - 130 
∠x = 50

Hope this helps :)
The angles of a triangle added up always equals 180 degrees, so just subtract 65 twice to find the answer: 50 degrees