Copyright page â includes: 1  the declaration of copyright (that is, who owns the copyright, generally the authors) 2  other types of credits, such as illustrators, editorial staff, indexer, etc., and sometimes notes from the publishers. 3  edition number â this number represents the number of the edition and of the printing.
Credit: wonker CC-BY 2.0. Some other characteristics of a triangular prism are that they have five faces and nine edges. For comparison, a rectangular prism has six faces and 12 edges. Mathematicians have derived Euler's formula for these and similar shapes. It states that for a polyhedron the number of faces plus the number of vertices minus the number of edges is always two. For a triangular prism, this formula holds true: (5 + 6 - 9 = 2).
An octagonal prism has 10 faces. The octagonal prism can be seen to have ended shaped like octagons. That's an 8-sided figure. is a 3-dimensional form, and if it has octagons on each end, it is going to have 8 faces. That's a face for each side of the octagon. The 8 faces of the body of the prism are added to the two faces (one on each end) for a total of 10 faces. (The illustration is a pentagonal prism.). An n-gonal prism has n+2 faces.