Which relationship is always correct for the angles m, n, and p of triangle ABC?

answer choices:
1. n + p = m
2. m + p = n
3. m + p +n = 180 degrees
4. m + p + n = 90 degrees

Which relationship is always correct for the angles m n and p of triangle ABC answer choices 1 n p m 2 m p n 3 m p n 180 degrees 4 m p n 90 degrees class=