There are several possible answers, but it would be most instructive to name eight figures having eight different numbers of sides. 1 side - not possible 2 sides - not possible 3 sides - triangle 4 sides - square, rectangle, rhombus, trapezoid 5 sides - pentagon 6 sides - hexagon 7 sides - septagon 8 sides - octagon 9 sides - nonagon 10 sides - decagon There are other possible answers for a four sided figure.
Hexagons
Shapes with straight sides are called polygons
You specify shapes by the number of sides (or edges, different name) they have. The suffix -gon at the end of a word show how many sides it has in the words. For example, an octagon has eight sides; so if you see a shape with eight sides, it's an octogon. All shapes are known as polygons, which means it has three or more sides.
Hendecagon
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.
Eight.
13 sides: Triskaidecagon14 sides: Tetrakaidecagon15 sides: Pentakaidecagon16 sides: Hexakaidecagon17 sides: Heptakaidecagon18 sides: Octakaidecagon19 sides: Enneakaidecagon20 sides: Icosagon
You can name the sides any way you like.
nonacontagon
Hexagons
113
It means many sides
pentagon
polologous
Shapes with straight sides are called polygons
A hendecagon or an undecagon is the name of a polygon which has eleven sides.
a quadrilateral, or Tetragon, or Quadrangle