ISEE/SSAT Vocabulary Builder›Words›H›heptagon
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heptagon
a flat shape with seven straight sides and seven angles
Synonyms
- septagon
- 7-gon
heptagon in a sentence
The British fifty-pence coin is shaped like a rounded heptagon with seven curved sides.
The architect designed the pavilion's roof as a heptagon so that seven support beams would meet evenly at the center.
Where it comes from
From Greek hepta 'seven' + gonia 'angle'
Memory hook
HEPTA (seven) + GON (angle) — a seven-angled shape.
Word parts
- hept, sept — seven
heptagon: hept (seven) + -agon (angle, from Greek gonia)
Read it in context
- Inside the Jury Room Social Science