Convex polygon or regular star polygon whose sides are congruent and whose interior angles are congruent.

### Properties

- A regular polygon has as many lines of symmetry as it has sides or vertices.
- A polygon that is not a regular polygon is called an
**irregular polygon**. - A regular polygon may be convex or non-convex.
- All regular star polygons are non-convex polygons. They should not be confused with
*regular polygons*.