MA Symmetry was not a major concern for the layout of Monte Albán plaza. Although the angles within the plaza are not perfect 90-degree corners, the plaza appears to be a rectangle without actually being so. The structures are not laid out in a symmetrical fashion, as the distances between the structures vary greatly from building to building. Construction methods used for orientation changed as Monte Albán expanded. Thick walls were often used in construction, as well as sloped sides when constructing tall / larger structures.