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In geometry, an icosahedron (/ ˌ aɪ k ɒ s ə ˈ h iː d r ən,-k ə-,-k oʊ-/ or / aɪ ˌ k ɒ s ə ˈ h iː d r ən / [1]) is a polyhedron with 20 faces. The name comes from Ancient Greek εἴκοσι (eíkosi) 'twenty' and ἕδρα (hédra) 'seat'.
Individual polygons are named (and sometimes classified) according to the number of sides, combining a Greek-derived numerical prefix with the suffix -gon, e.g. pentagon, dodecagon. The triangle, quadrilateral and nonagon are exceptions, although the regular forms trigon, tetragon, and enneagon are sometimes encountered as well.
Find the name of a polygon or a polyhedron by entering the number of sides or faces. A 20-sided polygon is called an icosagon and a 20-faced polyhedron is called an icosahedron.
There are generic geometric names for the most common polyhedra. The 5 Platonic solids are called a tetrahedron, hexahedron, octahedron, dodecahedron and icosahedron with 4, 6, 8, 12, and 20 sides respectively. The regular hexahedron is a cube.
An icosahedron is a three-dimensional figure with 20 faces, each of which is an equilateral triangle. Learn about the properties, formulas, and examples of regular and irregular icosahedra.
Icosahedron is considered as the fifth and final platonic solid that consists of 20 triangle-shaped sides which symbolizes the element of water. What Does Icosahedron Look Like? The shape icosahedron is a polyhedron i.e. a 3D shape with flat surfaces.
An icosagon is a shape with 20 sides and 20 corners. It has interior angles of 162 and exterior angles of 18. Regular icosagon. The regular icosagon has Schläfli symbol {20}, and can also be constructed as a truncated decagon, t {10}, or a twice-truncated pentagon, tt {5}. Area. The amount of space a regular icosagon takes up is.
