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|Ivars Peterson (MathTrek)|
|A tetrahedron has four triangular faces, four vertices, and six edges. When a vertex of one tetrahedron pierces the face of a second tetrahedron it forms a new, more complicated polyhedron: one triangular face has a triangular "hole" where the face was pierced. Mathematicians describe such a punctured face as being "multiply connected." Several years ago, mathematician John H. Conway wondered whether a polyhedron could have such a polygonal hole passing through each and every face and remain a polyhedron. He coined the term "holyhedron" to describe this form, should it exist... Jade Vinson's surprising solution is now slated for publication in the journal Discrete and Computational Geometry.|
|Levels:||High School (9-12), College|
|Resource Types:||Problems/Puzzles, Articles|
|Math Topics:||Computational Geometry, Higher-Dimensional Geometry, Polyhedra|
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