A '2d' ( 2-dimensional) shapoe is a straight line, or a polygon.
2D shape
A 2D shape with 9 sides is called a Nonagon.
A pentagon
Hexagon
A '2d' ( 2-dimensional) shapoe is a straight line, or a polygon.
The 2D shape which has one line of symmetry is the trapezium.
a line
It doesn't have any volume (3D) and it's not a line (1D). Thus, it is a 2D shape.
2D shape
A 2D shape with 9 sides is called a Nonagon.
Octagon
2D shapes include squares, triangles, rectangles and circles.
1D a single line (?) 2D a flat shape 3D a cube
Square
Tetradecagon.
A pentagon