Usually "octadecagon" but also the purely Greek "enneakaidecagon."
A five sided polygon is called a pentagon because pentagon means five sided polygon I think.
18. If a polygon has n sides, then it has n-2 triangles.There are 18 triangles in a 20 sided polygon.
A 12-sided polygon is called a dodecagon.
A 20-sided polygon is called an icosagon.
A 25 sided polygon is called a icosikaipentagon.
The name of a 18 sided polygon is Octadecagon.
An 18-sided polygon is called an octadecagon or an octakaidecagon.
An 18 sided polygon is called a Octadecagon or a Octakaidecagon
octadecagon or octakaidecagon
The name of a 18 sided polygon is Octadecagon.
The name of a 18 sided polygon is Octadecagon.
A five sided polygon is called a pentagon because pentagon means five sided polygon I think.
18. If a polygon has n sides, then it has n-2 triangles.There are 18 triangles in a 20 sided polygon.
A 12-sided polygon is called a dodecagon.
A 20-sided polygon is called an icosagon.
A 25 sided polygon is called a icosikaipentagon.
A 14 sided polygon is called a tetradecagon.