Answer:
1620/11=147 and 3/11
Explanation:
If you reread the question, it's not asking for the total sum of the angles in a regular 11-sided polygon, just 1 of the interior angles. Because the polygon is regular, we know that all 11 interior angles have the same value, so you just need to divide the total sum of interior angles(1620) by 11 to get your answer.