|Tool: 45-45-90 Triangles - Math Open Reference||
|Go to:||http://www.mathopenref.com/triangle454590.html (opens a new window)|
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°, 45° and 90°
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.
|Technology Type:||Java Applet|
|Cost:||Does not require payment for use|
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|Courses:||Geometry||Right, Special right triangle, Pythagorean theorem|