Diagonal
Definition: A line segment connecting two non-adjacent angles or vertices of a polygon and/or a polyhedron.
Symbol/Notation: none
Statement: When you are given the dimensions of a rectangular prism, you can find the length of its diagonal with the formula: d=Sqrt(l^2+w^2+h^2). When you apply this formula to the prism depicted above, you find that the length of the diagonal is 17.