Geometric device

A geometric device comprising:

• an internal support structure in the form of a dodecahedron have pentagonal faces;
• twelve angularly related rotatable extensions on said support structure, each of which is respectively associated with and rotatably mounted on one of the pentagonal faces of said dodecahedron support structure and said extensions being five-sided pyramids whose sides lie five planes substantially parallel to the planes of the five pentagonal faces of the support structure which join the face on which the extension is mounted;
• and
• a plurality of external surface elements in the form of a termination and movably mounted between adjacent pairs of said extension for selective rotation with either of its associated extension, with each surface element extending between two opposed faces of adjacent extension elements, said surface elements cooperating to define discrete geometric shapes about each of said extensions so that twelve raised geometric star shapes on twelve background fields in the form of a great dodecahedron are defined, and such that selective rotation of said geometric shapes with their associated extensions through predetermined angles of rotation affects the elements forming adjacent geometric shapes.

A geometric device comprising a central core member in the form of a dodecahedron;

• said core member having planar faces;
• a core extension rotatbly mounted on and projecting from the geometric center of each of said faces;
• and a plurality of external surface elements slidably engaging selective rotatable extensions and arranged to form a solid in the form of a great dodecahedron;
• said external surface elements creating a star-like figure on each of said twelve background pentagon surfaces;
• each star-like figure being associated with one of said extensions whereby said external surface elements are rotatable with two of said extensions about angularly related axes.