Answer:
Since I don't know what angles you do have i will explain the process look below.
Explanation:
1.) A triangle will always equal 180 Degrees
a.) Example: 95 degrees and 22 degrees
2.) Therefore you add the two messured angles you have
b.) 95+22=117
3.) Next you subtract the sum of both angles from 180 degrees
c.) 180-117=63
4.) Therefore the missing degree is found
d.) missing degree = 63