There are 90 sides in an enneacontagon.
It has 90 but nobody other than a Greek or a pretentious snob would call it that.
hecta- is the prefix for 100, so probably hectagon.But a 90 sided polygon is Enneacontagon
The sensible answer is a 90-gon. However, if you are pretentious or wish to obfuscate or irritate your audience you could go for enneacontagon.
Enneacontagon
Enneacontagon
The name of a 90 sided polygon is Enneacontagon
A ninety sided polygon is called an enneacontagon.
A 90 sided shape is called Enneacontagon.
A 90-sided polygon is called an enneacontagon.
An enneacontagon. See the related link for more information.
a crescent has 19 sides
how many sides does an polygonshave