Blank 20-sided

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D20, twenty sided dice. The great icosahedron die is one of the four regular star Kepler-Poinsot polyhedra. Its Schläfli symbol is {3, 5 / 2}.Like the convex form, it also has 20 equilateral triangle faces, but its vertex figure is a pentagram rather than a pentagon, leading to geometrically intersecting faces. A die (plural 'dice') is really a solid object with markings on each face that can be used to create a random number. Very useful when playing games of chance! Twenty-sided dice date back to the 2nd century AD and from Ptolemaic Egypt as early as the 2nd century BC. These dice are used in the RPG industry, at-least ever since the original Dungeons & Dragons was published in 1974. As the basis of D&D and also subsequent role playing games using the D20 system, the 20 sided dice has a commanding place in the world of gaming dice. Wargaming dice are used in Role-playing Games RpGs]. They are for RpGs in which the participants characters' action are determined through dice rules. In mathematics, 'fair dice' means that there is an equally likely chance of landing on any face. External article: PBE Games : Dice Roller http://www.pbegames.com/roller/