It is called Tetracontagon.
Chat with our AI personalities
A 40-sided polygon has 40 sides. Count again, to be sure.
A 14 sided polygon is called a tetradecagon.
Shapes with 13 to 20 sides are known as polygons. Specifically, a 13-sided polygon is called a tridecagon, a 14-sided polygon is called a tetrakaidecagon, a 15-sided polygon is called a pentadecagon, a 16-sided polygon is called a hexadecagon, a 17-sided polygon is called a heptadecagon, an 18-sided polygon is called an octadecagon, a 19-sided polygon is called an enneadecagon, and a 20-sided polygon is called an icosagon.
If its a regular 9 sided polygon then the exterior angles are 40 degrees.
The name of a 172 sided polygon is ChiliHeptacontakaidigon.