API Reference > geometry-core > CartesianGeometry > Matrix3d > sameDiagonalScale sameDiagonalScale Method If the matrix is diagonal and all diagonals are within tolerance, return the first diagonal. Otherwise return undefined. sameDiagonalScale(): number | undefined Returns - number | undefined Defined in core/geometry/src/geometry3d/Matrix3d.ts Line 2163 Last Updated: 13 June, 2024