PolyhedroidsThe geometry of many structures and building forms such as space frames, dome subdivisions and geodesic patterns are derived from any of the known polyhedra, hence the main title of this book 'Polyhedroids', or polyhedron related forms. A proper understanding of their geometry is crucial, as this determines in many aspects the overall form of buildings, the dimensions of structural parts and the directions under which they meet. In this book the basic