---
tag: 017E5PRS1Q
kind: concept
name: Platonic solid
aliases: [regular-polyhedron]
msc: [51M20]
sources:
  - url: https://en.wikipedia.org/wiki/Platonic_solid
    locator: lead section
same_as:
  wikidata: Q188745
  wikipedia: Platonic solid
---

## Summary

A Platonic solid is a convex polyhedron whose faces are congruent regular polygons, with the same number of faces at each vertex. There are exactly five: the tetrahedron, the cube, the octahedron, the dodecahedron and the icosahedron.