Sally is correct. The sum of the measures of the three interior angles must add up to 180 degrees. If a triangle had more than one right or obtuse angle, then the sum of the measures would be over 180 degrees. So two of the angles must be acute.
Sally is correct. The sum of the measures of the three interior angles must add up to 180 degrees. If a triangle had more than one right or obtuse angle, then the sum of the measures would be over 180 degrees. So two of the angles must be acute.