Tessellation is a pattern made by repeating shapes without any gaps or overlaps. These shapes can be simple, like squares and triangles, or more complex, like those seen in the works of M.C. Escher. Tessellations can be found in nature, art, and architecture, showcasing how shapes can fit together harmoniously. In mathematics, tessellations are studied in geometry, where they help illustrate concepts of symmetry and spatial reasoning. A common example is the tiling of floors, where tiles are arranged in a way that covers the entire surface evenly. Tessellations can be both two-dimensional and three-dimensional, expanding their applications in various fields.