high school
posted by Anonymous .
l has a measure a degrees. Find the average of the measures of the other three angles.

The three angles of a triangle must all add up to 180°  is that what you're working on?
posted by Anonymous .
l has a measure a degrees. Find the average of the measures of the other three angles.
The three angles of a triangle must all add up to 180°  is that what you're working on?