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Posted by on Saturday, August 28, 2010 at 11:25pm.

What geometric properties make “SOS” a good choice
for the international distress symbol?

  • Math - , Sunday, August 29, 2010 at 2:07am

    There are three letters and the Morse Code of each is three easily remembered pattern of dots or dashes.

    *** --- ***

  • Math - , Saturday, October 17, 2015 at 10:31pm

    It has point symmetry, so it looks the same rotated by 180 degrees.

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