This document discusses six ordering principles used in interior design: axis, symmetry, hierarchy, transformation, datum, and rhythm. It provides definitions and examples for each principle. Axis refers to an imaginary line used to align and arrange design elements. Symmetry involves balanced proportions around a central line. Hierarchy uses size, color, and placement to emphasize important spaces. Transformation alters forms through changes in size, shape, and other manipulations. Datum serves as a reference line or plane to organize patterns. Rhythm creates movement through a patterned repetition or variation of elements.