Regular Polygons1: equilateral triangle2, square3, pentagon4, hexagon5, heptagon6, octagon7, nonagon8, decagon9, hendecagon10, dodecagon11

Equilateral Triangle

square

pentagon

hexagon

heptagon

octagon

nonagon

decagon

hendecagon

dodecagon

References

  1. Regular Polygon
  2. Equilateral Triangle
  3. Square
  4. Pentagon
  5. Hexagon
  6. Heptagon
  7. Octagon
  8. Nonagon
  9. Decagon
  10. Hendecagon
  11. Dodecagon