Hanegraaf's Dissection of a Nonagon into a Triangle

This Demonstration shows Hanegraaf's swing-and-flip hinged dissection of a nonagon into a triangle.


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[1] G. N. Frederickson, Hinged Dissections: Swinging & Twisting, New York: Cambridge University Press, 2002 p. 224. www.cs.purdue.edu/homes/gnf/book2.html.
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