Homonym: two-dimensional (Flat)
Two-dimensional, often abbreviated as 2D, refers to objects or shapes that have only two dimensions: length and width. This means they do not have depth, making them flat. Common examples of two-dimensional shapes include squares, circles, and triangles. These shapes can be drawn on a flat surface, like paper or a computer screen.
In contrast to three-dimensional (3D) objects, which have length, width, and depth, two-dimensional representations are simpler. They are often used in art, design, and mathematics to illustrate concepts without the complexity of depth. Examples of 2D art include paintings and drawings.