Tool: Exterior Angles of a Triangle  Math Open Reference 


Go to:  http://www.mathopenref.com/triangleextangle.html (opens a new window)  
Description:  An interactive applet and associated web page that demonstrate the exterior angles of a triangle. The applet shows a triangle where the user can drag any vertex to reshape it. The exterior angles are shown and a running calculation shows that no matter how you change the triangle,
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  Exterior, Triangles  
