a plane figure with seven angles and seven sides
Origin of heptagon; from Classical Greek heptag?nos, seven-cornered: see hepta- and amp; -gon
A polygon with seven sides and seven angles.
Origin of heptagonLatin heptagōnon, from Greek heptagōnos, having seven angles : hepta-, hepta- + -gōnos, angled; see –gon.
- (geometry) A polygon with seven sides and seven angles.
- phone tag
Since 16th century, from Ancient Greek ἑπτάγωνον (heptagonon), from ἑπτά (hepta, “seven”) + γωνία (gonia, “angle”).