All angles of a triangle must add up to
- All three angles of a triangle must add up to
- All angles inside a triangle must add up to
- All angles in a triangle must add up to 180
- All angles of a triangle must add up to a sum of
- Angles of a triangle must add up to
- The interior angles of a triangle must add up to ____ degrees
- The angles of a right triangle must add up to 180