Regular Shapes

All regular 2d shapes, or regular polygons, have special properties listed below.

Here is a list of regular polygons from 3 to 10 sides.

For each polygon, a regular and an irregular example have been shown.

Any regular polygon will be mathematically similar to the example shown (having the same angles).

There are an infinite number of examples of different irregular polygons that could be shown, and only one example is given.

The formulae for the interior angles of a polygon are as follows:

Total of interior angles = 180 x (number of sides - 2)

Angle = total of interior angles / number of sides

We have created a calculator for finding the area of a regular polygon up to 12 sides.

There are also worked examples and worksheets to help you learn to find the area of different regular polygons.

On this webpage there are different printable polygon sheets.

Each polygon is available as a large image, either with or without a background.

If you are looking for large regular shape images to print, then this is the page for you!

Here you will find a List of different Geometric Shapes.

Included with each shape is a small picture and a description of the properties the shape has and how it relates to other shapes.

Included in this page are the following shapes:

• triangles
• quadrilaterals
• regular polygons
• irregular polygons
• a range of 3d shapes

All the printable Geometry worksheets in this section support the Elementary Math Benchmarks.

The Math Salamanders hope you enjoy using these free printable Math worksheets and all our other Math games and resources.

We welcome any comments about our site or worksheets on the Facebook comments box at the bottom of every page.