Question 1154212
.
<pre>

For any convex polygon with n sides (n vertices),  the sum of its interior angles is  180°*(n-2).


This formula (expression) is true for  <U>ANY</U>  n-sided polygon, not necessary regular.
</pre>

--------------


On this subject, see the lesson

&nbsp;&nbsp;&nbsp;&nbsp;- <A HREF=http://www.algebra.com/algebra/homework/Polygons/Sum-of-interior-angles-of-a-polygon.lesson>Sum of interior angles of a polygon</A>, 

in this site.


Do not miss this important lesson (!)