A polyhedron
A polyhedron with pentagonal faces, that has the same structure of the regular dodecahedron, but it differs from the regular dodecahedron because the pentagons are not regular. Image taken from Giovanni Strüver's memoir Studi sulla Mineralogia Italiana - Pirite del Piemonte e dell'Elba, from the memoirs of the Royal Academy of Sciences, Series II, Volume XXVI, 1871.
©
The image belongs to the sections...:
From a note of Struver (1871) (3D geometry)
