A 13 sided polygon is called a tridecagon or a triskaidecagon. The name comes from the Greek words for thirteen.
A five sided polygon is called a pentagon because pentagon means five sided polygon I think.
A 13 sided polygon is called a Tridecagon also a Triskaidecagon.
A 12-sided polygon is called a dodecagon.
A 20-sided polygon is called an icosagon.
A million-sided polygon is called a megagon.
A five sided polygon is called a pentagon because pentagon means five sided polygon I think.
A 13 sided polygon is called a Tridecagon also a Triskaidecagon.
A 12-sided polygon is called a dodecagon.
A 14 sided polygon is called a tetradecagon.
A 20-sided polygon is called an icosagon.
A million-sided polygon is called a megagon.
A 90-sided polygon is called an enneacontagon.
A five-sided polygon is called a pentagon.
what is a 50 sided polygon called?
2000 sided polygon
A 8 sided polygon is called a octagon.
The full name of a 13-sided polygon is a triskaidecagon. However, with polygons of such size, it's common practice to call them n-gons, so in this case the shape would be called a 13-gon.