The interior angles of a polygon with n sides add to (n-2)*180 degrees
So, if n= 16,
the sum of the interior angles is 14*180 = 2520 degrees.
4,140 degrees
The 7 interior angles of a heptagon add up to 900 degrees
The 5 angles add up to 540 degrees and each interior angle measures 108 degrees
The three interior angles of every triangle always add up to 180 degrees. If all of them are the same measure, then each one must be 180/3 = 60 degrees.
Supplementary
540 degrees
180 degrees
The 4 interior angles add up to 360 degrees
Yes.
1800 degrees from 12 angels
180 degrees
7200 degrees