The great dodecahedron is one of the four Kepler-Poinsot polyhedra, composed of twelve pentagonal faces arranged as six pairs of parallel pentagons that intersect one another to form a pentagrammic path, with five pentagons meeting at each vertex.
Facts
Partially Attested
Origin YearWikipedia credits Louis Poinsot with discovering the great dodecahedron in 1810, but the same article also notes the shape had already appeared in Wenzel Jamnitzer's 1568 Perspectiva Corporum Regularium, so 1810 marks its mathematical discovery rather than its first appearance. Connections
In Branch
Source Wikipedia: Great dodecahedron
Is Kind Of Object
Entity-backed identity for the object-kind enum value this mathematical object already carries, resolved to a mathematics concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The object-kind fact itself stays on the object unchanged.
Sources
1. Great Dodecahedron, from Wolfram MathWorld
DefinitionQuote, Definition
The great dodecahedron is the Kepler-Poinsot polyhedron whose dual is the small stellated dodecahedron.
2. Wikipedia: Great dodecahedron
History section
Historically, the great dodecahedron is one of two solids discovered by Louis Poinsot in 1810
- In Branch: Geometry, Lead sentence
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