<PRE><B>Question 770043</B>
Count of Sides________Total Interior Degrees
3_____________________180
4_____________________360
5_____________________180*3
6_____________________180*4
.
n_____________________180*(n-2)



Your polygon has 24*90 degrees for sum of interior angles, which is 2160 degrees.  According to the pattern shown relating the count of sides to the sum of the interior angles, {{{highlight(180*((3x-1)-2)=2160)}}}


All that needs to be done now is just pump out the answer for x.</PRE>