absolutely, yu kan make shape with n sides, weer n=3, 4, 5, 6,...
The eezee wae is draw shapes inside a serkel...points on the serkel
xtra eezee tu du square, then konvert it tu 8 sides, then 16 sides, then 32...
13 sides...help tu hav a formula...for a REGULAR polygon:
outside angel=senter angel
senter angel=360/n degrees
Then outside angel=senter angel & inside angel=180 - outside angel
for n=11, senter angel=32.72 deg