-gon

Forms the names of plane figures containing a given number of internal angles, and thus bounded by that number of line segments (polygons).

Suffix

  1. Forms the names of plane figures containing a given number of internal angles, and thus bounded by that number of line segments (polygons).
    • A pentagon has five sides.
    • a 17-gon

    Synonyms: -angle

Origin

From Ancient Greek γωνία (gōnía, “corner, angle”), from Proto-Indo-European *ǵónu (“knee”).

Related

-gonal