2D vs 3D – Difference and Comparison

What is 2D?

A 2D structure is one in which the x- and y-axes define the object’s form in two planes or axes, respectively, as described by the concept of two dimensions. Using the x-axis and y-axis, the only dimensions of a 2D figure are length and width. In contrast to 3D sculptures, these figures do not have any depth, and flat surfaces are the only places where they can be discovered. Their restricted design allows them to cover as much ground as possible while maintaining as little volume as possible.

Our daily lives are surrounded by a kaleidoscope of shapes & intangible structures. We are more likely to encounter 2D & 3D objects among the many different types of arrangements we meet in our everyday lives. Shoes, circular, rectangular, square, and pentagons are excellent examples of 2D systems.

These objects strictly circumscribe both the x-axis and the y-axis, and they cannot cross and overtop these two borders, although this is not the case for 3D models. According to geometrical definitions, 2D things can be thought of as existing in a space between two imaginary dimensions/planes, denoted by the x-axis and the y-axis.

What is 3D?

3D structure defining is to determine the object’s shape, it lives on three planes or axes, namely, the x-axis, the y-axis, and the z-axis. A 3D figure contains length, width, and height, represented by the x, y, and z axes, respectively. A 3D object has a different depth to its structure that extends beyond the limitations of a flat and plane surface; this new dimension, known as the z-axis, has been referred to as the x-axis. The purpose of this additional axis is to reduce the overall height of the figure.

Because they do not exist within the limitations of two dimensions, they are not planes or flatforms but rather contain the volume, which is a significant point of distinction between 2D and 3-dimensional structures.

As previously said, our daily lives are surrounded by various shapes and intangible structures. Of all the many conditions, 2D and 3D objects are the most popular systems we come up with daily. Examples of 3D designs in nature include sheets, cuboids, pyramidal, cylindrical, and prismatic forms.

Difference Between 2D and 3D

  1. The x- and y-axes are the only axes used in a 2D construction. In contrast, the x, y, and z axes are used in a 3D structure.
  2. The length and width are the only two sides of a 2D construction. The size, width, and height make up its three faces.
  3. Due to their appearance, 2D figures also are referred to as “plane” figures or “flat” figures. 3D statistics, on the other hand, are merely referred to as such.
  4. The circle, square, rectangle, and pentagon are all 2D structures. Prism, cuboid, pyramid, and cylinder are examples of 3D structures.
  5. The volume of a 2D object is zero, and a 2D structure lacks volume, whereas 3D structures do.

Comparison Between 2D and 3D

Parameters of Comparison2D3D
Axes usedOne-dimensional structures are composed of only two axes, denoted by their initials (x) and finals (y).Three axes, the x-axis, the y axis, and the z-axis, construct a 3D structure.
Defining dimensionsboth in terms of length and widthThe dimensions are the length, width, and height of the object.
Another nameFlat figures or “plane” figures have been used to describe their look.There is no other term for these figures but 3D (3D).
ExamplesEach of the four basic shapes is represented by a symbol.Cuboid, pyramid, cylinder, and prism are all geometric shapes.
VolumeIt is utterly devoid of soundThere is a lot of it.


  1. https://ieeexplore.ieee.org/abstract/document/595268/
  2. https://www.sciencedirect.com/science/article/pii/S0167865507000189