Julia K. answered 05/29/20
Tutor
New to Wyzant
Texas A&M Student/swim instructor, studying biomedical sciences
The other angles must be identical because this triangle is isosceles (2 sides are the same and 2 angles are the same). There are 180 degrees total in all triangles, therefore:
180-120=60.
60/2=30. The other two angles are 30 degrees.