What is the name of a polygon with 31 sides?

Answer 1

What is 31 sided polygon called

Answer 2

Ah, a polygon with 31 sides is called a "triacontakaihenagon." Isn't that a lovely name? Just imagine all the beautiful angles and lines you can create with a shape like that. Remember, there's no mistakes in geometry, just happy little shapes waiting to be discovered.

Answer 3

The formal name is tricontakaihenagon. Most people, including mathematicians, will use 31-gon since that effectively communicates the size of the polygon. But, if you want to appear pretentious or be obfuscatory, by all means use the Greek prefices.