Solids with lattice structures which includes metals and many inorganic solids can have regular structures where coordinating atoms are all at the same distance, but there also many such solids where the structures are irregular.
Solids with lattice structures which includes metals and many inorganic solids can have regular structures where coordinating atoms are all at the same distance and they form the vertices of a coordination polyhedron. However there also many such solids where the structures are irregular.