triangle inequality, moduleThe triangle inequality is usually expressed algebraically using vectors in two dimensions. This Demonstration shows two vectors, x and y, and their sum x+y. These three vectors form a triangle unless x is a multiple of y. The triangle inequality states that the sum of the lengths of two sides of a triangle is at least as large as the length of the third side. In symbols, |x|+|y|>=|x+y|Componente Curricular::Educação Superior::Ciências Exatas e da Terra::Matemática