Answer:
Acute!
Step-by-step explanation:
Since the angles of a triangle always add up to 180°, so if you subtract the angle measurements from 180, you should get the degree of the third angle.
In this case, 83° + 83° is 167°! Since 83 is an acute angle, and when all three angles in a triangle are acute, the triangle is an acute triangle :)
The missing angle measurement is 23°
I hope i helped lol. If not, i'm sorry.