You need to construct a regular polygon. When you draw two sides, the interior angle created between them is 144°, illustrated below.

What will be the sum, in degrees, of the measures of the interior angles of this polygon when it is completed?

Question

You need to construct a regular polygon. When you draw two sides, the interior angle created between them is 144°, illustrated below.
 
 

What will be the sum, in degrees, of the measures of the interior angles of this polygon when it is completed?

anonymous · Answer

so where is the illustration?
count the number of sides of the polygon. now subtract 2. multiply this answer by 180. now you have the sum of the interior angles