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How to cut an equilateral triangle into only four pieces so they can be rearranged into a square? Henry Dudeney's solution to this (the Habberdasher's problem) is particularly neat as it can work using hinged pieces. [more] [thanks to] [code]



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drive-all-over-the-town Kaynak:

drive-all-over-the-town:

Some of them from mr. div

via FFFFOUND!









 

 
  
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