2D

2D or two-dimensional space refers to a geometric model of the spatial world in which only two dimensions are considered. In this model, any point can be described using two coordinates, typically denoted as (x, y). This concept is fundamental in various fields such as geometry, physics, computer graphics, and cartography.

Geometry

In geometry, two-dimensional space is often studied in the context of Euclidean geometry. The basic elements of 2D geometry include points, lines, and shapes such as triangles, squares, and circles. The Cartesian coordinate system is commonly used to represent points in 2D space, where each point is defined by an ordered pair of numbers.

Physics

In physics, 2D models are used to simplify complex problems by reducing the number of dimensions. For example, the motion of objects on a flat surface can be analyzed using two-dimensional kinematics. This simplification is particularly useful in the study of waves, fluid dynamics, and quantum mechanics.

Computer Graphics

In computer graphics, 2D refers to the creation and manipulation of digital images in two dimensions. This includes raster graphics and vector graphics. 2D graphics are widely used in applications such as video games, user interface design, and animation. Software tools like Adobe Photoshop and CorelDRAW are commonly used for creating and editing 2D graphics.

Cartography

In cartography, 2D maps are used to represent the Earth's surface. These maps use various projection methods to translate the three-dimensional surface of the Earth into a two-dimensional plane. Common types of 2D maps include topographic maps, political maps, and thematic maps.

Related Concepts

• 1D
• 3D
• 4D
• Coordinate system
• Vector space
• Matrix (mathematics)

See Also

• Euclidean space
• Affine space
• Projective space
• Linear algebra
• Analytic geometry