Examples of 'Principles of Proportions': A) Tetrastyle; B) Hexastyle; C) Octastyle; D) Arch of Trajan Beneventum; E) Arch of Septimus Severus Rome; F) Baptistry, Pisa; G) Medieval Cathedrals; H) Henry VII's Chapel, Westminster; J) Chapter House, Wells; K) St George's Chapel, Windsor; L) King's Colle