2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/172497We present a cluster covering scheme to construct the two-dimensional octagonal quasilattice. A quasi-unit cell is successfully found which is a two-color cluster similar to the Gummelt's two-color decagon in five-fold quasilattice. The quasi-unit cells overlap each other following certain covering rules and thus lead to a perfect octagonal quasilattice.14 pages, 5 figures, 1 tableOther Condensed Mattertext