Well, I sold my first batch of puzzles (the triangle and greek cross puzzles) and have moved on to more difficult ones. Henry Dudeney, brilliant guy that he is, came up with a dissection for turning a square into a pentagon and you can read about his method and the misprint I found in the diagram accompanying his solution here. I also found a dissection for turning a square into a hexagon by Harry Lindgren. He wrote about it […]
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A Note on Henry Dudeney’s Pentagon-Square Dissection
Henry Dudeney gives a method for dissecting a square so that its pieces can be rearranged to form a pentagon. I found it in a copy of Dudeney’s book “Amusements in Mathematics” on Project Guetnberg here. It is puzzle #155 (“Pentagon and Square”) and I found another copy of it here: You will notice that two points are labeled ‘F’, one inside the pentagon and one inside the square. I’m embarrassed to say it took me a good fifteen […]
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