Welcome to Math Salamanders Printable Regular Shapes page.
Here you will find a wide range of free printable information sheets about regular and
irregular shapes, as well as some worksheets involving regular and irregular shapes.
All regular 2d shapes, or regular polygons, have special properties listed below.
Regular Shapes Properties
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.
Equilateral Triangle Angle: 60° Interior angles add up to 180° 
Irregular Triangle 
Square Angle: 90° Interior angles add up to 360° 
Irregular Quadrilateral 
Pentagon Angle: 108° Interior angles add up to 540° 
Irregular Pentagon

Hexagon Angle: 120° Interior angles add up to 720° 
Irregular Hexagon 
Heptagon Angle: 128.6° Interior angles add up to 900° 
Irregular Heptagon 
Octagon Angle: 135° Interior angles add up to 1080° 
Irregular Octagon 
Nonagon Angle: 140° Interior angles add up to 1260° 
Irregular Nonagon 
Decagon Angle: 144° Interior angles add up to 1440° 
Irregular Decagon 
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
Take a look at some more of our worksheets similar to these.
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:
All the printable Geometry worksheets in this section support the Elementary Math Benchmarks.
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How to Print or Save these sheets
Need help with printing or saving?
Follow these 3 easy steps to get your worksheets printed out perfectly!
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.
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