Spatial foundations or foundation parts for joining to give spatial structures

摘要

Spatial foundations or foundation parts for joining to give spatial structures are characterised in that the spatial foundations or foundation parts have side surfaces consisting of regular pentagons or pentagon parts, in the manner of a dodecahedron known per se, in that the foundations or foundation parts can be produced in identical and/or in two different sizes having the edge length ratio 1:cos 36 DEG , and in that both foundations and foundation parts of equal size and those of different size can be joined together.