We study the works by Mies van der Rohe from a viewpoint of the connection with the theory "Dynamic Symmetry" advocated by Jay Hambidge in 1920's. On this paper we analyze the plan of "Brick Country House" using the method to cut the diagonal at right angles. This method is the most fundamental one in Hambidge's theory. Through this analysis we understand that the arrangement of many elements in this plan is corresponding to the lines appeared by this method. Especially primary elements, the "extended wall" and the "chimney" in this house are corresponding to the lines of the famous figure seen in his writings. We also discover the disposition of housing plan on the drawing sheet is ruled on the method by Hambidge.