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.
10 sides.
There is no formula for how many sides there are in a polygon; the name of the polygon shows how many sides it has.
heptagons have 7 sides
8 sides
There are 90 sides in an enneacontagon.
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 109-sided shape is called a "enneacontakaienneagon." The name is derived from the Greek numerical prefixes "ennea-" (meaning nine) and "kai-" (meaning and), along with the suffix "-agon" (meaning angle). This polygon has 109 sides and 109 angles.
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