A rectangle is one of many names in the classification of 2D shapes as are polygons
A 2D shape with 9 sides is called a Nonagon.
Hexagon
A pentagon
Octagon
A plane shape. More detailed names depend on the shape itself.
A 2D shape with 9 sides is called a Nonagon.
Octagon
2D shapes include squares, triangles, rectangles and circles.
Square
hexagon
Hexagon
Tetradecagon.
A pentagon
Octagon
A plane shape. More detailed names depend on the shape itself.
A twenty sided, 2D figure is called an icosagon.
A ten-sided 2D polygon is known as a decagon.