# heptagon

> English word · Noun · IPA /ˈhɛp.tə.ɡɒn/

## Definitions
1. A polygon with seven sides and seven angles.

## Etymology
Since 16th century, from Ancient Greek ἑπτάγωνον (heptágōnon), from ἑπτά (heptá, “seven”) + γωνία (gōnía, “angle”). By surface analysis, hepta- + -gon.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/heptagon