Image:Apothem of hexagon.svg|thumb|right|The apothem of a hexagon.
From Greek Apo- + thema - something laid down.
- The distance from the center of a regular polygon perpendicular to one of its sides.
rfc-level|Translations at L3+ (AutoFormat? would have corrected level of Translations)
trans-top|the distance from the center of a polygon to a side
Portuguese: apÃ³tema m
Spanish: apotema f