Robert J. Lang - Origami Constructions

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1、Lang,OrigamiandGeometricConstructionsOrigamiandGeometricConstructionsByRobertJ.LangCopyright©1996–2003.Allrightsreserved.Introduction....................................................................................................................................2PreliminariesandDefinitions....

2、...................................................................................................2BinaryDivisions.............................................................................................................................4BinaryFoldingAlgorithm..................................

3、.......................................................................5BinaryApproximations.............................................................................................................9RationalFractions..............................................................................

4、..........................................11CrossingDiagonals...................................................................................................................12Fujimoto’sConstruction.................................................................................................

5、.........15Noma’sMethod........................................................................................................................18Haga’sConstruction................................................................................................................20IrrationalProportion

6、s.................................................................................................................22ContinuedFractions................................................................................................................22QuadraticSurds...................................

7、....................................................................................26AngleDivisions......................................................................................................................