Coins & Triangles by Kobon Fujimura Home / Puzzle Playground / Puzzles / Word Puzzles / When the centers of any three coins lie in the corners of an equilateral triangle of some size, such coins form an equilateral coin
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Document Date: 2011-01-18 16:22:56

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• Euclidean geometry
• Polygons
• Equilateral triangle
• Triangle
• Equilateral polygon
• ThinkFun
• Combination puzzles
• Puzzles
• Geometry
• Triangles