# Naming Commonly Used Polygons

The names of commonly used polygons: from a triangle to an n-gon.

## Table

The prefix of the polygon's name

shows the number of the sides of a polygon.

Tri-: 3

Quadri-: 4

Penta-: 5

Hexa-: 6

Hepta-: 7

Octa-: 8

Nona-: 9

Deca-: 10

For *n*, it's just *n*-gon.