What is icosahedron - Definition and Meaning

Icosahedron :

Its a polyhedron made up of 20 equilateral triangle faces.

Formula :

Volume = (5 (3+√5) * a3) / 12, Area = 5a2√3 where a = length of edge.

Example :

Icosahedron example
i Unit of Imaginary Part Identity Matrix

Learn what is icosahedron. Also find the definition and meaning for various math words from this math dictionary.

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