Polygon

Polygon

  • A polygon can also be defined as a closed polygonal chain.
  • The point where two sides meet is the vertex of the polygon.
  • Each line segment that joins two vertices is a side of the polygon.

The polygons listed below are named according to their number of sides:

  • 3 sides: triangle
  • 4 sides: quadrilateral
  • 5 sides: pentagon
  • 6 sides: hexagon
  • 7 sides: heptagon
  • 8 sides: octagon
  • 9 sides: nonagon
  • 10 sides: decagon
  • 11 sides: hendecagon
  • 12 sides: dodecagon
  • 15 sides: pentadecagon
  • 16 sides: hexadecagon
  • 20 sides: icosagon
  • 30 sides: triacontagon
  • 50 sides: pentacontagon
  • 100 sides: hectagon
  • 1000 sides: chiliagon
  • 10 000 sides: myriagon

Examples

This polygon has 4 vertices and 4 sides :

The closed polygonal chains below form various types of polygons:


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