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Rona Gurkewitz - Beginners Book of Modular Origami Polyhedra: The Platonic Solids

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Rona Gurkewitz Beginners Book of Modular Origami Polyhedra: The Platonic Solids
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Beginners Book of Modular Origami Polyhedra: The Platonic Solids: summary, description and annotation

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Whether or not youre familiar with traditional origami models, youre sure to be captivated by the fun and fascination of creating abstract geometric forms. This book by an expert paperfolder offers a clear, concise introduction to the special techniques for making beautiful, complex polyhedra models.

These 17 projects are based on the classic Platonic solids: the tetrahedron, hexahedron, octahedron, dodecahedron, and icosahedron. Folders at every level of experience, from absolute beginners to old hands, will appreciate the step-by-step diagrams and their detailed views of the models assembly. Additional helpful features include photos of the complete models, background on the Platonic solids, and references.

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Table of Contents BACKGROUND 1 What is modular origami Modular - photo 1
Table of Contents

BACKGROUND
1 What is modular origami Modular origami is origami made from several sheets - photo 2
1. What is modular origami?

Modular origami is origami made from several sheets of paper that have been folded into modules, also called units. The modules are usually identically folded but may be of several types. The modules are assembled into models that most often are patterned after the 3D geometric shapes called polyhedra.

2. What is the connection between modular origami and polyhedra?

Underlying most 3D modular origami is a uniform, convex polyhedral shape. The modules in the model are in positions corresponding to either the faces, edges or corners (vertices) of the polyhedral shape. Convex polyhedra dont have spikes. Uniform polyhedra have all of their corners having the same arrangement of shapes around them. For example, there are three squares meeting at each corner of a cube. So the more you know about polyhedra, the more modular origami shapes you can make.

3. What is a polyhedron?

A 3D polyhedron is a shape made up of polygons for sides, where a polygon is a shape made up of line segments connected in a row, such as a triangle or a square.

4. What are the Platonic Solids?

The Platonic Solids are five convex polyhedra that have been known since the time of Plato, the cube, the tetrahedron, the octahedron, the dodecahedron and the icosahedron, pictured on p iv. Each of these polyhedra has all of its faces the same regular polygon which means also that all of its edges are the same length. It can be shown that these are the only five geometric shapes with these properties. In addition, their vertices all lie on a sphere.

5. A short history of the relevance of the Platonic Solids

In Platos times the Platonic solids were equated with the following elements: tetrahedron-fire; cube-earth; octahedron-air; icosahedron-water and dodecahedron-universe. In the 1600s, Johannes Kepler used them as a basis for his system of astronomy. During the Renaissance artists used them as the subject of their art to better understand perspective. Starting in the 1800s polyhedra were used as models for crystal structures. Haeckel in the 1800s drew pictures of radiolaria which have icosahedral shape. In the 20th century virus coats were found to be icosahedral, fullerenes are molecules based on other polyhedral shapes, scientists used nanotechnology to build molecules of polyhedral shapes. Many 20th century artists and sculptors incorporated polyhedra into their work.

  1. Cromwell, Peter; Polyhedra; Cambridge University Press, 1997
  2. Fuse; Unit Polyhedron Origami, Japan Publications, 2006
  3. Fuse; Unit Origami, Japan Publications, 1990
  4. Gurkewitz and Arnstein, 3D Geometric Origami: Modular Polyhedra; DoverPublications, 1996
  5. Gurkewitz and Arnstein, Multimodular Origami Polyhedra: Archimedeans, Buckyballs and Duality, Dover Publications, 2003
  6. Kawamura; Polyhedron Origami for Beginners, Japan Publications, 2002
  7. Mitchell; Mathematical Origami; Tarquin Publications, 1997
  8. Montroll; Constellation of Origami Polyhedra; Dover Publications, 2004
  9. Montroll; A Plethora of Polyhedra in Origami; Dover Publications, 2002
  10. Mukerji; Marvelous Modular Origami; AKPeters, 2007
  11. Simon, Arnstein and Gurkewitz; Modular Origami Polyhedra; Dover Publications, 1999
  12. Wenninger, Magnus; Polyhedron Models; Cambridge University Press, 1970
LINKS
Krystyna Burczykwww1.zetosa.com.pl/burczyk/origami/galery1-en.htm
George Hartwww.georgehart.com/
Tom Hullwww.merrimack.edu/~thull/
David Mitchellwww.origamiheaven.com
Jeannine Moselyworld.std.com/~j9/sponge/
Meenakshi Mukerjihome.comcast.net/~meenaks/origami
Mette Pedersonmette.pederson.com/
David Pettymembers.aol.com/ukpetd/
James Plankwww.cs.utk.edu/~plank/plank/origami/origami.html
Francis Owweb.singnet.com.sg/~owrigami/
Eric Weissteinmathworld.wolfram.com/origami.html
Magnus Wenningeremployees.csbsju.edu/mwenninger/
Joseph Wuwww.origami.as/home.html
ORIGAMI SOCIETIES
British Origami Societywww.britishorigami.info
Origami-USAwww.origami-usa.org/
MAKING THE MODELS
Beginners Book of Modular Origami Polyhedra The Platonic Solids - image 3
DEFINITION OF SYMBOLS
- - - - - - - - - - -Valley crease, points down
Beginners Book of Modular Origami Polyhedra The Platonic Solids - image 4Mountain crease, points up
Picture 5Fold a valley crease
Picture 6Unfold
Picture 7Fold a valley crease and unfold
Picture 8Fold away from you, making a mountain crease
Picture 9Unfold a mountain crease
Picture 10Repeat once
Beginners Book of Modular Origami Polyhedra The Platonic Solids - image 11Repeat on the back
Beginners Book of Modular Origami Polyhedra The Platonic Solids - image 12Repeat three times
Beginners Book of Modular Origami Polyhedra The Platonic Solids - image 13Turn over
Picture 14Apply pressure here
Picture 15The next figure shows what this eye sees
Beginners Book of Modular Origami Polyhedra The Platonic Solids - image 16Inside reverse sink here, or just push in
...............Hidden line
Beginners Book of Modular Origami Polyhedra The Platonic Solids - image 17
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