You can read a bit about the companyâs history in this article, but I canât point you to the companyâs web site for the simple reason that it doesnât have one. Yes, as amazing as this is, here in mid-2009 Arca Swiss lacks a web site, one of the few companies of any size in the photographic industry without one.
A pyritohedron is a dodecahedron with pyritohedral (T h) 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 constrained to be regular, and the underlying atomic arrangement has no true fivefold symmetry axes.
A triangular pyramid has a 4 vertices. There are 4 vertices on a triangular pyramid.. A triangular pyramid is a pyramid made up of 4 triangles. The vertices are the points where the edges of the triangles meet. They are sometimes called corner points. There are 4 faces, therefore, there are 4 vertices. There are 6 edges, and if they are all equal in length, it would be called a tetrahedron. Source(s): http://wiki.answers.com/Q/How_many_verti...