rhombohedron

It is special by being a cuboid and a rhombohedron.

Cleavage is usually in three directions parallel to the rhombohedron form.

The truncated rhombohedron with a faint human skull on it.

The cube combines these special properties, and so is a special case of the rhombohedron.

This is also called the acute golden rhombohedron.

If two tetrahedra are attached to opposite faces of an octahedron, the result is a rhombohedron.

Amongst other allegorical symbols, the picture includes a magic square, and a truncated rhombohedron.

However, two regular tetrahedra can be combined with an octahedron, giving a rhombohedron which can tile space.

In geometry, a rhombohedron is a three-dimensional figure like a cube, except that its faces are not squares but rhombi.

In general the rhombohedron can have three types of rhomboid faces in congruent opposite pairs.

The nonconvex rhombic hexecontahedron can be constructed by 20 acute golden rhombohedron.

A tetrahedron is orthocentric if and only if its circumscribed parallelepiped is a rhombohedron.

It was shaped like a rhombohedron, a slanted rectangle balanced on its narrow edge, and Janeway repressed a sudden grin.

It is actually a rhombohedron, a six-sided prism, each face of which is a rhombus, or equilateral parallellogram.

The prismatic crystals are often terminated by the scalenohedron and the obtuse rhombohedron, thus resembling calcite (dog-tooth-spar) in habit.

They can hinder the growth of a calcite rhombohedron in a direction and thus it can form an aggregate on the side that will follow a different direction.

Each primary parallelohedron is combinatorially equivalent to one of five types: the rhombohedron (including the cube), hexagonal prism, truncated octahedron, rhombic dodecahedron, and the rhombo-hexagonal dodecahedron.

A rhombohedron is a parallelepiped with all rhombic faces; a trigonal trapezohedron is a rhombohedron with congruent rhombic faces.

Dürer's solid is combinatorially equivalent to a cube with two opposite vertices truncated, although Dürer's depiction of it is not in this form but rather as a truncated rhombohedron.

For example, in body-centered (bcc) or face-centered (fcc) cubic crystals, the primitive cell is a parallelepiped or rhombohedron, respectively, but the conventional unit cell used to describe these structures is a simple-cubic supercell.

Dürer's well-known engraving Melancholia I depicts a frustrated thinker sitting by what is best interpreted as a "truncated rhomboid" or a "rhombohedron with 72-degree face angles, which has been truncated so it can be inscribed in a sphere".

He is perhaps best known to New Yorkers for "Red Cube," a 28-foot rhombohedron tipped on end at Broadway and Liberty Street, and "News," a stainless-steel relief at the Associated Press Building, 50 Rockefeller Plaza.