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OverviewPlease note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. High Quality Content by WIKIPEDIA articles! In geometry, a pyritohedron is an irregular dodecahedron with pyritohedral (Th) symmetry. Like the regular dodecahedron, it has twelve identical pentagonal faces, with three meeting in each of the 20 vertices. However, the pentagons are not regular, and the structure has no five-fold symmetry axes. Its 30 edges are divided into two sets - containing 24 and 6 edges of the same length. Although regular dodecahedra do not exist in crystals, the distorted pyritohedron form occurs in the crystal pyrite, and it may be an inspiration for the discovery of the the regular Platonic solid form. Full Product DetailsAuthor: Lambert M. Surhone , Miriam T. Timpledon , Susan F. MarsekenPublisher: VDM Publishing House Imprint: VDM Publishing House Dimensions: Width: 22.90cm , Height: 0.50cm , Length: 15.20cm Weight: 0.136kg ISBN: 9786131021671ISBN 10: 6131021678 Pages: 84 Publication Date: 22 July 2010 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In Print  This item will be ordered in for you from one of our suppliers. Upon receipt, we will promptly dispatch it out to you. For in store availability, please contact us. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
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