In 1907, Henry Dudeney showed that you could dissect a square into 4 pieces that can be rearranged to form an equilateral triangle.
In 2024, Erik D. Demaine, Tonan Kamata and Ryuhei Uehara finally proved that this cannot be done with *less than* 4 pieces!
https://arxiv.org/abs/2412.03865
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Greg Egan /
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2025-02-15 08:15:59
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wss://relay.mostr.pubPublished at
2025-02-15 08:15:59Event JSON
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"content": "In 1907, Henry Dudeney showed that you could dissect a square into 4 pieces that can be rearranged to form an equilateral triangle.\n\nIn 2024, Erik D. Demaine, Tonan Kamata and Ryuhei Uehara finally proved that this cannot be done with *less than* 4 pieces!\n\nhttps://arxiv.org/abs/2412.03865\n\n(H/T nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqyxxu3fkku2jfpuuhesaexzuhh6z5al0rjjs292kcvcryxc35v02q9jsaev )\n\nhttps://media.mathstodon.xyz/media_attachments/files/114/006/904/936/533/557/original/372fc2028d21d329.mp4",
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