Diagram, Geometric shapes by Robert Hooke Drawing of geometric shapes labelled with letters, copied from a plate in Johannes Kepler's Harmonices Mundi (Linz, 1619). The shapes have been slightly rearranged from their positions in the original plate. A indicates an anti-prism and B a prism. D to F indicate that regular shapes with the correct number of sides can tile a plane, but not H or I. Some shapes appear three dimensional, others like nets. Subject: Mathematics, Geometry 17th century