A 2D shape with 9 sides is called a Nonagon.
A '2d' ( 2-dimensional) shapoe is a straight line, or a polygon.
A pentagon
Hexagon
Octagon
A 2D shape with 9 sides is called a Nonagon.
Octagon
2D shapes include squares, triangles, rectangles and circles.
A '2d' ( 2-dimensional) shapoe is a straight line, or a polygon.
Square
Tetradecagon.
A pentagon
Hexagon
Octagon
hexagon
A ten-sided 2D polygon is known as a decagon.
A twenty sided, 2D figure is called an icosagon.