Yes, and it is called the perimeter.
An hexagon
A Decagon
I think it would be called a "nonohedron".
Heptadecagon, or Heptakaidecagon
An octadecagon
a pentagonpentagon.A pentagon is a figure with five sides.
A hexagon is a 2-dimensional figure with six sides. In general, a 2-dimensional figure with many sides is called a polygon.
A side of a solid figure is called a face.
A 2-dimensional figure with 12 sides is called a dodecagon. A 3-dimensional figure with 12 sides (faces) is called a dedecahedron.
A polygon refers to a plane figure that has at least three straight sides and angles. An 18 sided shape is called an octadecagon or octakaidecagon.
Yes, and it is called the perimeter.
A heptagon is a polygon that has seven sides.
An hexagon
A Decagon
A dodecagon
a pentagon.