A 143-sided polygon is called a hecatontakaitetragon. The name is derived from the Greek words "hectaton" meaning hundred, "kai" meaning and, and "tetragon" meaning four-sided figure. The hecatontakaitetragon is a type of polygon with 143 sides and 143 angles.
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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.
A ten-sided polygon is called a decagon.
The name of a 172 sided polygon is ChiliHeptacontakaidigon.
An 18-sided polygon is called an octadecagon or an octakaidecagon.