Hello!
115 and 1 are supplementary, or they add up to 180. This means we subtract to find 1.
180-115=65
Therefore, angle 1 is 65 degrees.
115 and 2 are vertical angles. Therefore they are congruent, so angle 2 is 115 degrees.
1 and 3 are corresponding angles, so they are also congruent. Therefore angle 3 is 65 degrees.
∠1=65°
∠2=115°
∠3=65°
I hope this helps!
