Rhombic Dodecahedron Geometry Diagram - Mathematical Polyhedron Illustration #226971 (License: Personal Use)

This black-and-white geometric illustration depicts a rhombic dodecahedron-a convex polyhedron with 12 congruent rhombic faces-where key elements are annotated: 'm' marks opposite face pairs, 'r' indicates equivalent vertices, and 'z' denotes characteristic angles at the vertices. Dashed lines indicate hidden edges and internal symmetry planes, clarifying its spatial structure and relationship to cubic lattices and close-packing arrangements. The diagram is commonly used in crystallography, mathematics education, and materials science.

Used in academic textbooks, online math resources, and crystallography guides to explain space-filling polyhedra, Voronoi tessellations, and FCC lattice geometry; targets students, educators, and researchers seeking visual understanding of 3D symmetry.