👉 A forthset is a type of mathematical operation in which two or more terms are combined, resulting in another term. A fourth term refers to an object that has four properties or characteristics. For example, if we have three objects and they all have different colors but share the same size, then we can combine them into a single object with four sides. In mathematics, a forthset is often used as part of a larger operation where two terms are combined to form another term, such as in the