Work backwards from the total
A polygon’s interior angles sum to 1080 degrees. How many sides does it have?
Correct.This lesson is now marked done.
Not quite.Try again, or ask for a hint.
Run the formula in reverse: divide the total by 180 to find the number of triangles, then add 2 for the number of sides.
Getting it wrong does not hold you back.Move on to the next lesson: The triangle inequality →