The magic ring of tetrahedra
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To make the magic ring of tetrahedra:
\- Cut out both templates along the outer red line.
\- Fold along the broad dashed lines ("valley folds").
The magic ring of tetrahedra | Tangente
The magic ring of tetrahedra
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.
