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Glite Dictionary
enneagon

enneagon

9.9
A flat shape with nine straight sides and nine corners
  • noun
  • /ˈɛnɪˌæɡən/
  • Specialized
translation icon : enneágono
  • Architects sometimes use the shape of an enneagon in modern building designs.

Examples

  • Each side of the enneagon was exactly five centimeters long.

  • The math teacher asked the students to draw an enneagon on their graph paper.

  • An enneagon has nine sides.

  • The architect designed a unique enneagon for the new building.

  • An enneagon has nine sides and nine angles, making it a unique geometric shape.

  • To create a model of an enneagon, you need to cut out nine equal-length sides.

  • In geometry class, we learned how to calculate the interior angles of an enneagon.

Synonyms

nonagon
vsenneagon
  • Specialized
7.6

A flat shape with nine straight sides and nine angles

has identical geometric meaning but uses a different name with other roots

Surface Forms

enneagon singular
enneagons plural

Morphology

enneagon = ennea (semi-transparent) = ennea + gon

Formed from combining elements meaning 'nine' + 'angle'; the parts are not standalone English words so the construction is recognizable to learners familiar with polygon names (e.g., hexagon) but not fully transparent to a B1 learner.

Etymology

Enneagon comes from Greek parts ennea 'nine' and -gon from gonia 'angle'. So an enneagon is literally a flat shape with nine sides and nine angles, which is why its name tells you its meaning.