Polygons

  • Henagon (1 edge) (monogon also used)
  • Digon (2 edges)
  • Triangle (3 sides)
  • Quadrilateral (4 sides)
  • Pentagon (5 sides)
  • Hexagon (6 sides)
  • Heptagon (7 sides)
  • Octagon (8 sides)
  • Enneagon (9 sides) (or Nonagon)
  • Decagon (10 sides)
  • Hendecagon (11 sides)
  • Dodecagon (12 sides)
  • Tridecagon (13 sides)
  • Tetradecagon (14 sides)
  • Pentadecagon (15 sides)
  • Hexadecagon (16 sides)
  • Heptadecagon (17 sides)
  • Octadecagon (18 sides)
  • Enneadecagon (19 sides) (or Nonadecagon)
  • Icosagon (20 sides)
  • Triacontagon (30 sides)
  • Tetracontagon (40 sides)
  • Pentacontagon (50 sides)
  • Hexacontagon (60 sides)
  • Heptacontagon (70 sides)
  • Octacontagon (80 sides)
  • Enneacontagon (90 sides)
  • Hectagon (100 sides)