Regular polygons
Regular polygon is a polygon where all sides are of equal length, called equilateral sides, and where all angles are also equal, called equilateral angles.
Some regular polygons are so common that they have a special descriptive mathematical name:
Number of sides |
Common name |
3 |
Triangle |
4 |
Square (Quadrilateral) |
5 |
Pentagon |
6 |
Hexagon |
7 |
Heptagon |
8 |
Octagon |
9 |
Nonagon |
10 |
Decagon |
12 |
Dodecagon |
n |
n-gon |