icosahedron
Usage examples:
-
Within the Earth's orbit inscribe an icosahedron the sphere inscribed in it will be Venus's orbit.
Thomas Orchard in "The Astronomy of Milton's 'Paradise Lost'". -
If you cut out a piece of cardboard of the form shown in the smaller diagram, and cut half through along the dotted lines, it will fold up and form a perfect icosahedron
Henry Ernest Dudeney in "Amusements in Mathematics". -
The five regular solids, in appropriate order- Octahedron, Icosahedron Dodecahedron, Tetrahedron, Cube.
Oliver Lodge in "Pioneers of Science". -
Now, inscribe in the earth an icosahedron the sphere inscribed in it will be Venus: inscribe an octahedron in Venus: the circle inscribed in it will be Mercury.
Walter W. Bryant in "Kepler".