Linked from
The 10 pages that link to Platonic solid, each with the reason it gives.
SphereRelated: Platonic solids can be inscribed in spheres with every vertex on the surface.
Regular polygonRelated: Its five forms are built from regular polygon faces.
DiceNarrower topic: The five Platonic solids provide several symmetrical forms for dice.
IcosahedronNarrower topic: The regular icosahedron is one of the five Platonic solids.