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sangaku - a geometrical puzzle - Mathematics Stack Exchange | Geometric, Pythagorean theorem, Geometry
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PDF] From Sangaku Problems to Mathematical Beading: A Hands-on Workshop for Designing Molecular Sculptures with Beads | Semantic Scholar
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Sangaku: Professor Hill Presents the World's Greatest Number Puzzles!: 9781620872055: Hill, James D.: Books - Amazon.com
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