> What about Gauss' poligon? was it an heptadecagon, heptacaidecagon or > decaheptagon?
If JHC is taken as the ultimate authority on such things then heptakaidecagon would be the preferred term, though I gather from reading his and others' commentaries that heptadecagon (the term I've always used) is acceptable.
I don't know about decaheptagon -- would that be 70 angles?
Of course, 17-gon is probably the term least subject to misinterpretation.