Flexagons Inside Out has 2 ratings and 2 reviews. Charles said: Flexagons are hinged polygons made of paper or some other easily bent substance that disp. Abstract: This article presents 3 puzzles which turn things inside out: the cube puzzle, turning a paper strip inside out, and hexaflexagons. Readers who wish to . Buy Flexagons Inside Out by Les Pook (ISBN: ) from Amazon’s Book Store. Everyday low prices and free delivery on eligible orders.

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Flexagons Inside Out – Les Pook – Google Books

These are printed full size and laid out so they can be photocopied. A hexaflexagon with three faces. To make a sharp, straight fold, first score on the fold line. You might want to start with the pattern with numbers on each face—1, 2 and 3.

The degree angles in the rhombi formed by the adjacent 4, 5, or 6 tiles will only appear on the sides and never will appear at the center because it would require one to cut the strip, which is topologically forbidden. Sherlonya Turner marked it as to-read Dec 11, Read, highlight, and take notes, across web, tablet, and phone.

If you are a seller for this product, would you like to suggest updates through seller support? Color the pattern template as you like with markers, colored pencils or crayons. If it doesn’t pop open, flatten the flexagon and try again with the other three corners. In figure 6, for example, each blue triangle has at the center its corner decorated with a wedge, but it is also possible, for example, to make the ones decorated with Y’s come to the center. The tri-hexaflexagon has three faces in three combinations.


Two flexagons are equivalent if one can be transformed to the other by a series of pinches and rotations.

Jan 24, Ruben rated it liked it. Skimmed the last sections.

Stone at Princeton in Although knowledge of the technical details insid Flexagons, paper models that can be bent in different ways ojt change their shape, are easy to make and work in surprising ways. Flexagons have a surprisingly complex mathematical structure and just how a flexagon works is not obvious on casual examination of a paper model. Cut around the pattern on the outline. Make a hexagonal box to store your hexaflexagons or give a Flexagon Boxed Set as a gift.

Read all of the directions. Frederickson Snippet view – Thanks for telling us about the problem.

Flexagons are usually square or rectangular tetraflexagons or hexagonal hexaflexagons. Download and print the pattern. Patterns are Adobe PDF files. Learn how to make a flexagon, a most fascinating geometric toy! Write a customer review.

Amazon Advertising Find, attract, and engage customers. Retrieved from ” https: Hexaflexagons come in great variety, distinguished by the number of faces that can be achieved by flexing the assembled figure.

Rachael Briggs marked it as to-read Mar 27, Note the different patterns used for the colors on the two sides. Detailed instructions using a sequential notation are also included, which I found a necessity. Figures show the final folding of the spiral to make a hexagon; in 5, two red faces have been hidden by a valley fold, and in 6, two red faces on the bottom side have been hidden by a mountain fold.

In some cases, you can use rigid paper, but for most of them, it is better to use very flexible paper, as it is often necessary to bend the edges to get the desired shape. In geometryflexagons are flat models, usually constructed by folding strips of paper, that can be flexed or folded in certain ways to reveal faces besides the two that were originally on the back and front.


Benjamin added it Jun 14, No previous knowledge of mathematics or geometry is necessary, although if you are unaccustomed to mathematical notation, the instructions may be a bit difficult at first. Customers who bought this item also bought. Amazon Second Chance Pass it on, trade it in, give it a second life.

Flexagons Inside Out

Trivia About Flexagons Inside Out. Choose a Pattern and Print It Choose a tri-hexaflexagon to make. Recreational mathematics Mechanical puzzles Paper folding Geometric group theory Paper toys.

Make a variety of flexagons to share with your friends. A prefix can be added to the name to indicate the number of faces ouf the model can display, including the two faces back and front that are visible before flexing.

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Try to make the cuts very straight and accurate. I did not try to construct all of the flexagons, which would have taken weeks, but those that I did build were really cool. The results are not always what you expect. Appomsk added it May 31, The technical details would require a mathematical background but the models can be made and used by anyone.

This hexaflexagon has six faces. Would you like to tell us about a lower flesagons Your flexagon is done!