When a room is not rectangular, it will usually be a rectangle modified by the addition or insertion of other centrally symmetric components.

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• Each room will most often be simple in shape, most often rectangular.claim0.869
  Invariant of good rooms.
• Even when a room contains major asymmetry, the composition of space will be such as to create a combination of locally symmetric centers.claim0.836
  How asymmetry can still be alive.
• The room sticks out and claims a substantial part of the perimeter, beginning to shape the building around the room.claim0.824
  How a room's need for light and view determines the building envelope.
• The centers which bring life to a room are larger features which lie beyond the boundary of the room.claim0.819
  A key insight about position and context.
• In a controlled geometric comparison, subdividing a rectangle asymmetrically with a thin band of space between the four resulting rooms produces a more profound form — with more levels of scale, boundaries, and centers — than simply cutting it into four equal parts.finding0.816
  The geometric demonstration that asymmetrical subdivision with boundary bands creates more living structure
• Usually the main center of a room is defined by two things: it is a quiet spot in the pattern of movement and a place near the light.claim0.810
  Operational definition of a room's main center.
• rectangular roomconcept0.808
  The typical simple shape of a well-functioning room; the starting point for most good rooms.
• The living room will work well, only when it is so shaped that the centers (core resting place, window place, etc.) are really strong and have life in themselves.claim0.799
  Practical design rule: comfort arises from the geometry of strong centers.