All I can tell you is that a 16 sided shape is called a Hexadecagon
Octadecadron
a one sided shape is called a henagon and a 2 sided shape is called a digon
A 10-sided shape is called a decagon.
Hommasquabblelagagon
All I can tell you is that a 16 sided shape is called a Hexadecagon
Octadecadron
Octagon
An 18 sided shape is called a octadecagon. This refers to both 2 dimensional and 3 dimensional shapes in a mathematical sense.
An eighteen-sided shape is called an octakaidecagon, or octadecagon.
A polygon refers to a plane figure that has at least three straight sides and angles. An 18 sided shape is called an octadecagon or octakaidecagon.
it is called a seven sided shape in Canada
a one sided shape is called a henagon and a 2 sided shape is called a digon
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.