A triangle has an exterior angle with a measure of 120 degrees. Can you determine the measures of the interior angles? Explain.

Question

Please help me, I have been stuck on this for a long time.

Answer 1

if the exterior angle = 120 degrees, you probably mean the interior angle = 180-120 = 60 degrees

If it's an equilateral triangle, then all 3 interior angles = 60 degrees

If it's a right triangle, then the other 2 interior angles are 90 and 30 degrees

if it's not an equilateral triangle, or right triangle then the other 2 angles sum to 120 degrees, but could be any number of different angles, such as 40 and 80 or 50 and 70,