platonic solid

• Polyèdre convexe dont toutes les faces sont des polygones réguliers identiques et dont le même nombre de faces se rencontre à chaque sommet. Il en existe exactement cinq : le tétraèdre, le cube, l'octaèdre, le dodécaèdre et l'icosaèdre.

A convex polyhedron with identical regular polygon faces and the same number of faces meeting at each vertex. There are exactly five such shapes: tetrahedron, cube, octahedron, dodecahedron, and icosahedron.

1. Regular polyhedronC1formal

   A convex polyhedron with identical regular polygon faces and the same number of faces meeting at each vertex. There are exactly five such solids: tetrahedron, cube, octahedron, dodecahedron, and icosahedron.

   solide de Platon

   • The tetrahedron is the simplest platonic solid, with four triangular faces.
   • Ancient Greek philosophers associated platonic solids with the classical elements.
   • A cube is a platonic solid because all its faces are identical squares.