This site is a personal site that explains the difference between a prism and an antiprism. Pictures of a heptagonal prism and a heptagonal antiprism help illustrate this difference.

This site is a personal site that explains the difference between a prism and an antiprism. Pictures of a heptagonal prism and a heptagonal antiprism help illustrate this difference.

Learn basic polygon shapes and their properties.

The properties of the four different types of polygons--pentagons, hexagons, heptagons, and octagons--are discussed here. Some practice questions are also given to test your knowledge.

This website has basic definitions for most polygons, regular and irregular.

This personal site presents some general information about polygons.

[Free Registration/Login Required] Students will explore polygons.

On this site students are instructed to locate different types of polygons on triangle grid paper. This page can be printed so that students can actually draw them. It also gives a definitions link for each polygon.

Use this calculator to calculate properties of a regular polygon. Enter any 1 variable plus the number of sides or the polygon name. Calculates side length, inradius, circumradius, area, and perimeter.