0 having two parts that match exactly, either when one half is like an image of the other half in a mirror, or when one part can take the place of another if it is turned 90° or 180°: --
If the trade-off between resistance and competitive ability is direct and symmetrical, it is expected that resistance will decrease in the crowded lines.
This causes the location of the maximum axial velocity to move near the outer wall in symmetrical positions above and below the radial centreline.
Symmetrical placement of the redox centers produces the minimum transfer times.
If more symmetrical men have greater ability to invest in offspring, they might invest more under such conditions.
There is no mention here of how reliably tools are judged to be symmetrical by researchers, nor the specific criteria for symmetry.
Unworked and worked shell ornaments, shell "trumpets," and several clusters of obsidian projectile points were distributed following symmetrical patterns, mainly along the periphery.
Maybe that's why it's so symmetrical: it's trying to balance these contradictions.
The sense of enclosure is further supported by the centering of the windows for a symmetrical division of the outside walls.
