Hexagons
nonacontagon
113
pentagon
polologous
It means many sides
Shapes with straight sides are called polygons
Quadrilaterals are polygons with four sides. Triangles are polygons with three sides.
a quadrilateral, or Tetragon, or Quadrangle
There are infinitely many polygons so it would be impossible to name them all. For the names of those with a fewer sides see the related link.
Regular polygons.
nonagon(also called an enneagon)