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Keywords from Image Description:
Etude.style.medieval.. Quatre rhombodres se pntrant constituent deux pyramides composes de triangles quilatraux se pntrant c'estdire un solide en forme d'toile huit pointes semblables et dont chacune des pointes est ellemme une pyramide compose de triangles quilatraux voyez fig ViolletleDuc Drawings by Eugne ViolletleDuc