Regular Icosahedron (Noun)
Meaning
An icosahedron with twenty equilateral triangles as faces.
Classification
Nouns denoting two and three dimensional shapes.
Examples
- The regular icosahedron is one of the five Platonic solids, which are highly symmetrical polyhedra.
- A regular icosahedron has twenty equilateral triangular faces and can be inscribed within a sphere.
- Each vertex of a regular icosahedron is shared by five triangular faces.
- The regular icosahedron can be constructed by adding to each face of a regular dodecahedron a new vertex in the center of the face.
- A regular icosahedron is a highly efficient solid for packing space, due to the relatively small gaps between its equilateral faces.