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In geometry, a polyhedron (pl.: polyhedra or polyhedrons; from Greek πολύ (poly-) 'many' and ἕδρον (-hedron) 'base, seat') is a three-dimensional figure with flat polygonal faces, straight edges and sharp corners or vertices. The term "polyhedron" may refer either to a solid figure or to its boundary surface. The terms solid polyhedron and polyhedral…
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polyhedra faces convex vertices edges regular symmetry many surface two may vertex also polyhedral volume solids space polygons group three-dimensional
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Polyhedron | Characteristics | number of faces, topological classification and Euler characteristic, duality, vertex figures, surface area and volume, lines as in geodesics and diagonals, Dehn invariant, symm… | 1.00 | infobox |
| Polyhedron | Definition | A three-dimensional example of the more general polytope in any number of dimensions. | 1.00 | infobox |
| Polyhedron | is a | convex hull of its vertices | 0.90 | text |
| Polyhedron | is a | convex polyhedron defined in three-dimensional hyperbolic space | 0.90 | text |
| Polyhedron | is a | solid or surface that can be described by its vertices | 0.90 | text |
| Polyhedron | is a | polyhedron whose Euler characteristic is less than or equal to 0 | 0.90 | text |
| Polyhedron | is a | sum of the areas of its faces | 0.90 | text |
| Polyhedron | is a | convex polyhedron with hexagonal and pentagonal faces | 0.90 | text |
| Polyhedron | is a | planar graph with three-connected | 0.90 | text |
| Polyhedron | is a | convex hull of a finite set of ideal points | 0.90 | text |
| the skew apeirohedra have also been called polyhedra | instance of | shapes with infinitely many faces | 0.80 | text |
| Weaire-Phelan bubbles | instance of | Two important types are bubbles in froths and foams | 0.80 | text |
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