Henry Ernest Dudeney/Puzzles and Curious Problems/186 - Triangle and Square/Historical Note
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Historical Note on Puzzles and Curious Problems by Henry Ernest Dudeney: $186$ - Triangle and Square
Martin Gardner reports that Harry Lindgren has discovered a $5$-piece dissection.
This appears in his $1964$ work Geometric Dissections.
Sources
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Answers: $350$. Triangle and Square