45-45-90 triangle

Abstract: An interactive applet and associated web page that demonstrate the properties of a 45-45-90 isosceles right triangle. The applet shows a right triangle that can be resized by dragging any vertex. As it is dragged, the remaining vertices change so that the triangle's angles remain 45 degrees, 45 degrees and 90 degrees The text on the page points out that the sides of a 45-45-90 triangle are always in the ratio of 1 : 2 : root 2 Applet can be enlarged to full screen size for use with a classroom projector. After use in the classroom, student can access it again from any web browser at home or in the library with no login required. This resource is a component of the Math Open Reference Interactive Geometry textbook project at http://www.mathopenref.com.

Conditions of Use: Custom License
Content is free to view and to use for education purposes and to print and distribute printed copies for non-commercial uses without modification. 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.