In computer graphics, tessellation refers to the dividing of datasets of polygons (sometimes called vertex sets) presenting objects in a scene into suitable structures for rendering. Especially for real-time rendering, data is tessellated into triangles.
Surface texture on the model that involves using two-dimensional digital image files, such as .jpegs or .pngs. source
Short for "triangles". A triangular polygon is referred to as a tri or triangle, and is a simple three-sided polygon. It has exactly 3 vertices at its corners and 3 edges connecting those points. This is the smallest configuration required to make a polygonal face.