CAG, or Computer-Aided Geometry, refers to the use of computer software to assist in the creation, manipulation, and analysis of geometric shapes and structures. It is commonly used in fields such as engineering, architecture, and computer graphics to enhance design accuracy and efficiency. In addition to its applications in design, CAG also plays a significant role in computer-aided design (CAD) systems, where it helps streamline the process of drafting and modeling. By utilizing algorithms and computational techniques, CAG enables users to visualize complex geometries and perform simulations, making it an essential tool in modern technology.