Only one color, but not one size, Stuck at the bottom, yet easily flies. Present in sun, but not in rain, Doing no harm, and feeling no pain. What is it. ... Read more of Only one color, but not one size, at Free Jokes.caInformational Site Network Informational
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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?


Read Answer






Next: HOW TO DRAW AN OVAL.

Previous: THE GARDEN PUZZLE.



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