Difference Between 2D and 3D 

The world around us is full of shapes. While some shapes exist only on flat surfaces, others exist everywhere else. These shapes are classified as either 2D or 3D.

Definition of 2D and 3D

2D refers to the term “two-dimensional.”

3D refers to the term “three-dimensional.”

Aspects of 2D and 3D

A 2D shape is a figure that has only length and height as its dimensions. Because 2D shapes lie on a flat surface, they are also known as plane figures or plane shapes. While they have areas, 2D shapes have no volume.

Apart from length and height, a 3D shape also has width or depth as its third dimension.

Mathematical Definition for 2D and 3D

In mathematics and physics, a 2D figure is plotted on two axes, namely the x- and y-axes.

Whereas, a 3D figure is plotted on three axes, namely the x-, y-, and z-axes.

Examples of 2D and 3D

Circle, triangle, square, rectangle, and pentagon are some of the most common examples of 2D shapes.

Cylinder, pyramid, cube, and prism are some of the most common examples of 3D shapes.

Summary of difference between 2D and 3D

A 2D, or two-dimensional, shape has length and height as its dimensions. Also known as plane shapes, they can be plotted in a graph on the x- and y-axes. Circle, triangle, and square are some of the most common examples of 2D figures.

A 3D, or three-dimensional, shape has length, height, and width (depth) as its dimensions. Mathematically, 2D figures are plotted on the x-, y-, and z-axes of a graph. Cylinders, pyramids, and cubes are some of the most common examples of 3D shapes.

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