API Reference > geometry-core > CartesianGeometry > Matrix3d > factorRigidWithSignedScale factorRigidWithSignedScale Method Test if all rows and columns are perpendicular to each other and have equal length. If so, the length (or its negative) is the scale factor from a set of rigid axes to these axes. result.rigidAxes is the rigid axes (with the scale factor removed) result.scale is the scale factor factorRigidWithSignedScale(): undefined | { rigidAxes: Matrix3d, scale: number } Returns - undefined | { rigidAxes: Matrix3d, scale: number } Defined in geometry3d/Matrix3d.ts Line 2362 Last Updated: 11 June, 2024