A geometric dissection is a cutting of one or more figures into pieces that can be rearranged to form other figures. Some dissections have a very special property: The pieces can be connected by hinges, so that you can swing the pieces one way to form one figure, and another way to form the other figure. I identified a few such dissections in my first book on geometric dissections, and then I wrote a second book wholly on hinged dissections. You can find a number of animations of hinged dissections on the web:
If you know of any dissection pages that I have missed, please send me email.
Last updated October 19, 2001.