Tetragon is a four-sided polygon with four angles. It is also known as a quadrilateral. However, there are other words that can be used as synonyms for tetragon, including quadrangle, quadrangle shape, quadrate, square, rectangular, and parallelogram. These words describe different types of tetragons with specific characteristics, such as four equal sides, four right angles, two pairs of parallel sides, or opposite sides of equal length. For example, a square is a type of tetragon that has four equal sides and four right angles. Using synonyms for tetragon can be helpful in clarifying the type of four-sided figure being referred to in mathematics or everyday language.