
Les tunnels - Problème de maths | Tangente
♥♥ Les tunnels


This article is not yet available in English; the French version is shown.


Articles recommended for you.

For a change, beneath its polyhedral exterior, the subject of this instalment in our mathematical objects saga is a puzzle. You will find everything you need to build it on the Tangente website.

The flexacube and a more sophisticated form, the Yoshimoto cube, are three-dimensional versions of flexagons. Beyond their construction, these astonishing objects raise questions about the flexibility of polyhedra and formalize that question: under what condition does a solid remain rigid?

Details on how to build the ring of tetrahedra that you can cut out from the pull-out section of Tangente 200. An explanation of how the numbers on its forty faces were chosen, using a rule that generalizes the concept of a magic square.