...Figure 11-a shows how to cut a parallelogram into a square, and Figure 11-b shows how to cut a square into a regular pentagon. Both were introduced in the second volume of Lucas's Mathematical Games, and their mathematical content is profound. Figure 12 was introduced in H. Dudeney's (1847-1930) Canterbury Puzzles (1919), and shows how to cut a square into an equilateral triangle. What's more, it is an amazing piece in that if you turn the four pieces connected by eyelets to the right, it becomes a square, and if you turn them to the left, it becomes an equilateral triangle. ... *Some of the terminology explanations that mention the "Canterbury Puzzle" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…図11‐aは平行四辺形を正方形に裁ち合わせるもの,図11‐bは正方形を正五角形に裁ち合わせるもので,どちらもリュカ著の《数学遊戯》第2巻に紹介されているが,その数学的な内容には深みがある。また図12はデュードニーH.E.Dudeney(1847‐1930)著の《カンターベリー・パズル》(1919)に紹介されているもので,正方形から正三角形への裁ち合せを与えている。しかも鳩目(はとめ)でつないだ4片を右に回せば正方形,左へ回せば正三角形という驚異的なものである。… ※「《カンターベリー・パズル》」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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