A 2D geometric model is a geometric model of an object as two-dimensional figure, usually on the Euclidean or Cartesian plane.

Even though all material objects are three-dimensional, a 2D geometric model is often adequate for certain flat objects, such as paper cut-outs and machine parts made of sheet metal.

2D geometric models are also convenient for describing certain types of artificial images, such as technical diagrams, logos, the glyphs of a font, etc. They are an essential tool of 2D computer graphics and often used as components of 3D geometric models, e.g. to describe the decals to be applied to a car model.

2D geometric modeling techniques

• simple geometric shapes
• boundary representation
• the brush-and-path paradigm
• Boolean operations (constructive geometry) including clipping

See also

• computational geometry
• digital image

Euclidean plane geometry