In geometry, an icosahedron (/ ˌaɪkɒsəˈhiːdrən, - kə -, - koʊ -/ or / aɪˌkɒsəˈhiːdrən / [1]) is a polyhedron with 20 faces. The name comes from Ancient Greek εἴκοσι (eíkosi) 'twenty' and ἕδρα (hédra) 'seat'. The plural can be either "icosahedra" (/- drə /) or "icosahedrons".

The regular icosahedron (or simply icosahedron) is a convex polyhedron that can be constructed from pentagonal antiprism by attaching two pentagonal pyramids with regular faces to each of its pentagonal faces, or by putting points onto the cube.

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.

Mar 5, 2025 · The regular icosahedron, often simply called "the" icosahedron, is the regular polyhedron and Platonic solid illustrated above having 12 polyhedron vertices, 30 polyhedron edges, and 20 equivalent equilateral triangle faces, 20{3}.

For a regular icosahedron (where all faces are equilateral triangles): The name icosahedron comes from the Greek icosa- meaning 20, because it is a polyhedron with 20 faces. When we have more than one icosahedron they are called icosahedra.

Mar 5, 2025 · The regular icosahedron (often simply called "the" icosahedron) is the regular polyhedron and Platonic solid having 12 polyhedron vertices, 30 polyhedron edges, and 20 equivalent equilateral triangle faces, .

An icosahedron has 30 edges—the angle between the edges of an icosahedron measures 60°. The corners of an icosahedron, where the faces meet, are called vertices. There are 12 vertices in an icosahedron.

An icosahedron is a polyhedron with 20 faces. The prefix "icosa" means twenty. When "icosahedron" is used without any qualifiers, we assume that it is a regular icosahedron, which is an icosahedron in which the 20 faces are all equilateral triangles. An icosahedron is a three-dimensional figure made up of only polygons.

In this article we examine the symbolism & geometry of the icosahedron - one of the 5 Platonic solids, as well as its associated Archimedean & Catalan solids.

In geometry, an icosahedron (Greek: eikosaedron, from eikosi twenty + hedron seat; /ˌaɪ.kəʊ.sə.ˈhi.dɹən/; plural: -drons, -dra /-dɹə/) is any polyhedron having 20 faces, but usually a regular icosahedron is implied, which has equilateral triangles as faces.