About the Book
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 117. Chapters: Arabesque, Aegis, Fleur-de-lis, Chevron, Spandrel, Cartouche, Gargoyle, Trefoil, Diapering, Atlas, Volute, Wallpaper group, Barber's pole, Three hares, Sheela na Gig, Hexagram, Taijitu, Palmette, Triskelion, Acorn, Ornament, Molding, Tracery, Corbel, Illusionistic ceiling painting, Triquetra, Guilloche, Acanthus, Sauwastika, Rustication, Keystone, Lintel, Quatrefoil, Socarrat, Triple spiral, Finial, Meander, Bucranium, Triglyph, Gable stone, Rosette, Hunky Punk, Garden ornament, Boss, Voussoir, Overdoor, Sunburst, Dog-tooth, Egg-and-dart, Margent, Kokoshnik, Acroterion, Gul, In-mould decoration, Mille-fleur, Chofah, Dado rail, Okir, Crocket, Waterleaf, Spur, Alfiz, Bowtell, Cista, Lombard band, Millwork, Antefix, Risalit, Annulet, Bead and reel, Certosina, Zoophorus, Ovolo, Curlicue. Excerpt: A wallpaper group (or plane symmetry group or plane crystallographic group) is a mathematical classification of a two-dimensional repetitive pattern, based on the symmetries in the pattern. Such patterns occur frequently in architecture and decorative art. There are 17 possible distinct groups. Wallpaper groups are two-dimensional symmetry groups, intermediate in complexity between the simpler frieze groups and the three-dimensional crystallographic groups (also called space groups). Wallpaper groups categorize patterns by their symmetries. Subtle differences may place similar patterns in different groups, while patterns that are very different in style, color, scale or orientation may belong to the same group. Consider the following examples: Examples A and B have the same wallpaper group; it is called p4m. Example C has a different wallpaper group, called p4g. The fact that A and B have the same wallpaper group means that they have the same symmetries, regardless of details of the designs, whereas C has a different set of sy...
