🔬 Discovery

Platonic solids

Los cinco sólidos platónicos

Date
c. 360 BCE · confidence medium
Place
Athens, Greece
Credited to
Theaetetus (construction and proof), Plato (popularised in the Timaeus)
People
👤 Platón427 BCE–347 BCE👤 Teeteto416 BCE–369 BCE
Field
Knowledge & symbols

What was discovered

There are exactly five convex regular polyhedra: the tetrahedron, cube, octahedron, dodecahedron and icosahedron. It is one of the earliest complete classification theorems.

The proof that there are only five closes Book XIII of Euclid's Elements.

What it led to

  • the theory of polyhedra
  • Euler's formula
  • the theory of symmetry groups
  • crystallography
🕸️ View in the graph

Built on

  • Pythagoreans (dodecahedron)
  • Thales's geometry

Made possible

Links