The Short Diagonal of Octagon is the length of smallest diagonals or the line joining a vertex and any one of the vertices that coming next to the adjacent vertices of the first vertex of the Octagon. And is denoted by dShort. Short Diagonal of Octagon is usually measured using the Meter for Length. Note that the value of Short Diagonal of Octagon is always positive. Typically, the value of Short Diagonal of Octagon is greater than 0.