Three-dimensional, often abbreviated as 3D, refers to objects that have depth, width, and height. Unlike two-dimensional (2D) shapes, which only have length and width, 3D objects can be viewed from multiple angles. Common examples of 3D objects include cubes, spheres, and pyramids. In technology, three-dimensional representations are used in various fields, such as computer graphics, virtual reality, and 3D printing. These applications allow for more realistic simulations and designs, enhancing user experiences and enabling the creation of complex structures that mimic real-world objects.