The perpendicular distance from the center of a regular polygon to any of its sides.
The perpendicular from the center of a regular polygon to any one of its sides.
Webster's New World
(geometry) The perpendicular distance from the center of a circle to a chord of the same circle.
(geometry) The distance from the center of a regular polygon perpendicular to one of its sides (a special case of the above).
Other Word Forms of Apothem
Origin of Apothem
From Ancient Greek ἀπόθεμα (apothema, “deposit”), from ἀπό (apo, “off, away”) + θέμα (thema, “that which is laid down”).
apo– Greek thema something laid down theme
From American Heritage Dictionary of the English Language, 5th Edition
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