Foci of an ellipse

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Author:

John Page

Subject:

Mathematics and Statistics

Institution Name:

Math Open Reference

Collection:

Math Open Reference

Grade Level:

Secondary

Abstract:

An interactive applet and associated web page that show the definition and properties of the focus points (foci) of an ellipse. The applet has an ellipse whose major and minor axes can be dragged. The applet shows the location of the foci, which are always on the major axis, and shows how they move with variation of the axis lengths. The web page also has a formula for calculating the location of the foci. Applet can be enlarged to full screen size for use with a classroom projector. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Course Type:

Learning Module

Languages:

English

Material Type:

Readings, Simulations

Media Format:

Graphics/Photos, Text/HTML

Technical Requirements:

Java

Conditions of Use:

Custom Permissions
User may: * Use, view and link to any page on the site. * Print any page and distribute printed copies on a non-commercial basis. User may charge to cover the costs of printing and distribution. * Create courses or other documents that have links to any page in the site, even if that makes it look like the pages are part of the course, so long as the page contents are not modified. User may not: * Copy any file on the site electronically, other than for the purposes stated above.

Copyright Holder:

Copyright 2009 John Page