Answer:
54 degrees
Step-by-step explanation:
180- 72 = 108
108 divided by 2 = 54
54°
There is 180° is a triangle. We have 72° given already
180 - 72 = 108
Since there are two y's we divide by two
108 ÷ 2 = 54°
I hope this helps! ^_^
