Fragment and work formed by assembling the fragments

摘要

The present invention is to provide a fragment comprising a body, a plurality of projections formed along a peripheral edge of the body and a plurality of cavities each formed between the projection and the body, wherein each of the cavities is adapted to matingly couple to a cavity of another identical fragment for engaging one projection with the body or the other projection, thereby enabling the fragments to be assembled to form the work by means of an assembly of the fragments.