2 answers:
The possible answer for y is 72 hope this helps
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 :)
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