Archimedean solid

American  

noun

1. Geometry. any of 13 semiregular polyhedra whose faces are composed of two or more types of regular polygons and whose angles are all congruent.

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Archimedean solid Scientific  

/ är′kə-mē′dē-ən,-mĭ-dē′- /

1. A polyhedron whose faces are regular polygons and whose angles are all congruent. The faces may all be of the same type, in which case the solid is a regular polyhedron, or may be of different types. There are only thirteen Archimedean solids.

2. See more under polyhedron

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Example Sentences

It is a relative of the rhombicuboctahedron, which is an Archimedean solid that also has 24 vertices with three squares and one equilateral triangle around each vertex.

From Scientific American • Mar. 31, 2018

The rhombicuboctahedron is an Archimedean solid, and ψρ is not.

From Scientific American • Mar. 31, 2018

But Archimedes’ original list only had 13, and mathematicians have for the most part agreed with his list and use a definition of Archimedean solid that includes only those 13.

From Scientific American • Mar. 31, 2018