Perimeter

Pronunciation: /pəˈrɪm ɪ tər/ ?
Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)
Manipulative 1: Perimeter of a polygon. Created with GeoGebra.

The perimeter of a polygon, is the edges, or boundary of the polygon, or the length of those edges. The perimeter of a simple closed curve is the boundary of that curve or the length of the boundary. The perimeter of a circle is called a circumference.

Click on the blue points in manipulative 1 and drag them to change the figure. The perimeter is the black lines of the polygon. The length of the perimeter is displayed in the figure. Manipulative 2 shows the perimeter of an ellipse. As you drag the points in manipulative 2, note that if the figure becomes a hyperbola, the perimeter is undefined. This is because a hyperbola is not a simple, close curve.

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)
Manipulative 2: Perimeter of an ellipse. Created with GeoGebra.

References

  1. perimeter. http://wordnet.princeton.edu/. WordNet. Princeton University. (Accessed: 2011-01-08). http://wordnetweb.princeton.edu/perl/webwn?s=perimeter&sub=Search+WordNet&o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&h=.

More Information

  • Triangle (perimeter). allmathwords.org. All Math Words Encyclopedia. Life is a Story Problem LLC. 2009-03-12. http://www.allmathwords.org/article.aspx?lang=en&id=Triangle#perimeter.

Cite this article as:


Perimeter. 2008-10-25. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/p/perimeter.html.

Translations

Image Credits

Revision History


2008-10-25: Initial version (McAdams, David.)

All Math Words Encyclopedia is a service of Life is a Story Problem LLC.
Copyright © 2005-2011 Life is a Story Problem LLC. All rights reserved.
Creative Commons License This work is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 License