â¢ Egyptian Hieroglyphs keyboard (more than 5000) â¢ Egyptian keyboard (Latin alphabet) for transliteration â¢ WikiHiero: online keyboard to type the Hieroglyphs (in several images) â¢ EgyptianHieroglyphs: Middle Egyptian lessons â¢ Gardiner's sign list â¢ Hieroglyphs lessons by Jacques Kinnaer â¢ Friesian school: pronunciation of the Egyptian language â¢ Hieroglyphs classified by category (Gardiner's sign list) â¢ Hieroglyphs classified by family, in colour (Gardiner list) â¢ Projet Rosette: hieroglyphs classified by family (Gardiner list) or transliteration
In elementary geometry, a polyhedron (plural polyhedra or polyhedrons) is a solid in three dimensions with flat polygonal faces, straight edges and sharp corners or vertices. The word polyhedron comes from the Classical Greek ÏÎ¿Î»ÏÎµÎ´ÏÎ¿Î½, as poly- (stem of ÏÎ¿Î»ÏÏ, many) + -hedron (form of á¼Î´ÏÎ±, base or seat).olyhedra with congruent regular faces of six or more sides are all non-convex, because the vertex of three regular hexagons defines a plane. The total number of convex polyhedra with equal regular faces is thus ten, comprising the five Platonic solids and the five non-uniform deltahedra.
The regular dodecahedron, often simply called the dodecahedron, is the Platonic solid composed of 20 polyhedron vertices, 30 polyhedron edges, and 12 pentagonal faces, . It is also uniform polyhedron and Wenninger model. It is given by the Schlaefli schlÃ¤fli symbol and The wythoff. symbol