We can find the sum of the interior angles of a polygon with the following formula:
[tex](n-2)\cdot180[/tex]
where n is the number of sides.
Then, for a 16-gon, we have n=16 and the sum of interior angles is:
[tex](16-2)\cdot180=14\cdot180=2520\degree[/tex]
Answer: the sum of the interior angles of a 16-gon is 2520 degrees.
