Math Puzzle - DRAWING A SPIRAL.

There was an old fellow named Green, Who grew so abnormally lean, And flat, and compressed, That his back touched his chest, And sideways he couldn't be seen. There was a young lady of Lynn, Who was so excessively thin,... Read more of THIN PEOPLE at Free Jokes.ca

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DRAWING A SPIRAL.

(Patchwork Puzzles)
If you hold the page horizontally and give it a quick rotary motion
while looking at the centre of the spiral, it will appear to revolve.
Perhaps a good many readers are acquainted with this little optical
illusion. But the puzzle is to show how I was able to draw this spiral
with so much exactitude without using anything but a pair of compasses
and the sheet of paper on which the diagram was made. How would you
proceed in such circumstances?

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