a1 Centro de Estudios Antropológicos, Colegio de Michoacán, Zamora 59690, Michoacán, México
This study examines the geometry of the architecture of the Teuchitlan tradition of western Mexico. An argument will be made that these concentric circular buildings represent formal architectural planning and that they have cultural significance. The pattern dating from the Classic period (ca. a.d. 200–700) will be stressed.