Well, if 20 weren't included, perhaps teenagons (smile). Fowler, for example, notes that the tens were written as iota (10), kappa (20), etc. So one could, I suppose, call 10 through 19 iotagons and 20 through 29 kappagons.
At 11:33 AM -0600 10/13/03, firstname.lastname@example.org wrote: >John Conway wrote; > >> [Ken Pledger wrote:] >> >> > >> > > what are the names for polygons with 11 to 20 sides called? >> > >> >> Aha - this is a new problem! Has anyone a good idea for what >> these names should be called? > >Polygonomials? > >--Lou Talman > Department of Mathematical & Computer Sciences > Metropolitan State College of Denver > >