Polygonal models are digital representations of three-dimensional objects created using polygons, which are flat shapes with straight sides. The most common polygon used in 3D modeling is the triangle, but models can also be made from quadrilaterals and other polygon types. These models are widely used in various fields, including video games, animation, and virtual reality, due to their efficiency and versatility. In 3D graphics, polygonal models are constructed by connecting vertices (points in space) with edges (lines connecting the points) to form faces (the flat surfaces). Software like Blender and Maya allows artists to manipulate these models, adding details and textures to create realistic representations of objects, characters, or environments.