-gon

Full definition of -gon

Suffix

1. (geometry) Forms the names of plane figures containing a given number of angles, and thus bounded by that number of line segments (polygons). If the number is large enough, it can be attached directly to an English numeral with a hyphen.
• A pentagon.
• A 17-gon.

Related terms

• decagon
• dodecagon
• enneagon
• heptagon
• hexagon
• n-gon
• nonagon
• octagon
• pentagon
• polygon
• quindecagon
• tetragon
• trigon
• undecagon