If you wish to communicate information, I suggest you call it an 24-gon. Although there is a prefix for 24 (pentaconta-) I suggest you keep it simple. Not only is the use of long Greek prefices pretentious, you will only annoy the reader who will probably have to consult a dictionary. Having said that, if you do want to be pretentious or obfuscate, you can use the link below for polygons with up to 999 sides. http://faculty.kutztown.edu/schaeffe/Tutorials/General/Polygons.html
it is called a seven sided shape in Canada
An five sided shape is called a Pentagon
A 90 sided shape is called Enneacontagon.
A 128-sided shape is called a hecatoicosioctagon.
According to Professor John Conway, a mathematician at Princeton A 24 sided polygon is called an icosikaitera. But apparently most mathematicians just call it a 24-gon.
icosikaitetragon or sometimes called 24-gon.
it is called a seven sided shape in Canada
A shape, or polygon, with 24 sides is called an icosikaitera. Many people simply refer to it as a 24-gon.
A 10-sided shape is called a decagon.
An five sided shape is called a Pentagon
a 69 sided shape is called a sexagon
A 90 sided shape is called Enneacontagon.
A 35-sided shape is called a "pentatriacontagon." The prefix "penta-" denotes that it has 35 sides, while the suffix "-contagon" indicates that it is a polygon with that many sides. Polygons are named based on the number of sides they have, following a standard naming convention.
Hommasquabblelagagon
The 22 sided shape is called a: ICOSIKAIDIGON
A five-sided shape is called a pentagon.
A 128-sided shape is called a hecatoicosioctagon.