Respuesta :

The possible answer for y is 72 hope this helps
anonymous12345678901
All angles in a triangle add to 180°
Since we know that one of the angles is 72° and the other two angles are the same..

We can subtract 72° from 180°
180°-72°=108°
Divide the result by 2
108°/2=54°

So the best answer would be B.54°

I hope this helps :)