Polygons are plane figures formed by three or more line segments called sides that meet at points called vertices. A regular polygon has all interior angles that are congruent, while an irregular polygon does not have congruent interior angles. Regular polygons include triangles, squares, pentagons and other figures with five or more sides where all interior angles are equal.

1. Geometry, Patterns,
and Algebra

2. Five- or More-Sided Polygons
Polygons - are plane figures formed by three or
more line segments called sides. The sides meet
to form angles at points called vertices.

4. A regular polygon - has congruent interior
angles.

5. An irregular polygon – are not congruent