As the area of the base is given by a ^ 2 \ sin \ theta and it follows that the height of a rhombohedron is given by the volume divided by the area.
12.
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.
13.
For example, for the unit rhombohedron with rhombic acute angle of 72, the three internal diagonals ( BG, CF, and DE ) are 1.543 and the long diagonal ( AH ) is 2.203.
14.
For a unit rhombohedron ( side length = 1 ) whose rhombic acute angle is ? and has one vertex is at the origin ( 0, 0, 0 ) with one edge lying along the x-axis the three vectors are
15.
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.
16.
Founder Hanks spoke of Theta Tau to his friend, Robert Downing, a member of the Rhombohedron Club at Michigan College of Mines; after correspondence and an inspection trip by Brother Hanks, the club ( established in 1903 ) was installed as Beta Chapter in 1906.
17.
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.
