 Space-filling polyhedron

A space-filling polyhedron, also known as a tessellating polyhedron, is a three-dimensional geometric shape that can fill space without gaps or overlaps when repeated. Essentially, when these polyhedra are arranged in a lattice or grid formation, they completely fill a volume without leaving any empty spaces. The most common example of a space-filling polyhedron is the cube, which can tile three-dimensional space perfectly.