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Tool: Construct 30-6-90 triangle. Math Open Reference
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Go to: http://www.mathopenref.com/306090triangle.html (opens a new window)
Description:

An interactive applet and associated web page that provide step-by-step animated instructions on how to contruct 30-60-90 triangle with given base length using only a compass and straightedge.

The animation can be run either continuously like a video, or single stepped to allow classroom discussion and thought between steps.

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 Triangles, Straightedge and compass