Tool: 30  60  90 Triangles  Math Open Reference 


Go to:  http://www.mathopenref.com/triangle306090.html (opens a new window)  
Description:  An interactive applet and associated web page that demonstrate the properties of a 306090 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 30°, 60° and 90° The text on the page points out that the sides of a 306090 triangle are always in the ratio of 1 : 2 : root 3 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  
Author:  John Page  
Language:  English  
Cost:  Does not require payment for use  
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Courses:  Geometry  Right, Right Triangles, Special right triangle, Pythagorean theorem  
