A Johnson Solid is a convex polyhedron whose faces are all regular polygons. Unlike uniform polyhedra (which include the Platonic Solids, Archimedean Solids, prisms, and antiprisms), Johnson Solids do not have a uniform vertex configuration. Instead, while all their faces are regular, their vertices can differ in the arrangement of faces around them.
These 92 unique shapes were first enumerated and named by Norman Johnson in 1966. He published a list and classification of these polyhedra, confirming that there were exactly 92 such solids that met his specific criteria. Each Johnson Solid is typically denoted by the letter 'J' followed by a number from 1 to 92 (e.g., J1, J2). They represent a fascinating category of geometrically significant shapes, bridging the gap between highly symmetric polyhedra and more general forms.
