2-dimensional (2D) shapes have only two dimensions, length and width . They can be drawn on a piece of paper. A polygon is a 2-D shape with straight sides that meet up with no gaps.
'2D' stands for 2-dimensional. A dimension is a measurement in a particular direction in space. Examples of dimensions include length, breadth and depth. Put simply, 2D shapes are flat.
What are 2D shapes?
If a shape has two dimensions, it means there are 2 ways it can be measured in space.
All 2D shapes can be measured by their length and width or length and height. But remember, shapes that are 2D are completely flat.
For example, the square below is a shape in 2D because it's flat and has straight sides.
