These five platonic solids represent the five basic elements that are Air, Water, Earth, Fire, and the Universe. There are five platonic solids namely Isochaedram, Tetrahedron, Octahedron, cube, and dodecahedron. ![]() It is constructed by congruent (equal shape and size), regular (all sides and angles are equal), polygon faces with the same number of faces meeting at each vertex ( the sum of each angle at vertex is less than 360 degrees). In three - dimensional geometry, a platonic solid is a regular convex polyhedron. The platonic solids other than Icosahedron are tetrahedron, dodecahedron, cube, and octahedron. The best non-similar Icosahedra shape is known as (convex, non-stellated) regular icosahedron, a platonic solid whose faces are 20 equilateral triangles. There are numerous non - similar shapes of Icosahedra, some of the shapes among them being more symmetrical to others. ![]() ![]() The plural form of icosahedron means ‘Icosahedra’ or ‘Icosahedrons’. The word “icosahedron’ is derived from the Greek word Eikosi means ‘twenty’ and hedra meaning ‘ seat’. The icosahedron is one of the five platonic solids bounded by 20 equilateral triangles and has 12 vertices and 30 edges.
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