(related to Problem: Drawing A Spiral)

Make a fold in the paper, as shown by the dotted line in the illustration. Then, taking any two points, as $A$ and $B,$ describe semicircles on the line alternately from the centers $B$ and $A,$ being careful to make the ends join, and the thing is done. Of course, this is not a true spiral, but the puzzle was to produce the particular spiral that was shown, and that was drawn in this simple manner.


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Project Gutenberg

  1. Dudeney, H. E.: "Amusements in Mathematics", The Authors' Club, 1917

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