Dissections

Hinged Triangle Into a Square

 
         
   
 
 
 

 

 

   

-This is one of many hinged dissections of one regular polygon into another.  See Greg Frederickson's book, "Hinged Dissections: Swinging and Twisting".

-This object is made from mahogany and brass.

-According to Martin Gardner, Dudeney presented a similar mahogany and brass model to the Royal Society in 1905.

-For more information on dissections, see

M. Gardner, The 2nd Scientific American Book of Mathematical Puzzles & Diversions, 1st ed., Simon and Schuster, New York, 1961, pp. 32-36.

M. Gardner, The Unexpected Hanging and Other Mathematical Diversions, 1st ed., Simon and Schuster, New York, 1986, pp. 43-51.