Membra omnia, quae supra capitula columnarum sunt futura, id est epistylia, zophora, coronae, tympana, fastigia, acroteria, inclinanda sunt in frontis suae cuiusque altitudinis parte xii, ideo quod, cum steterimus contra frontes, ab oculo lineae duae si extensae fuerint et una tetigerit imam operis partem, altera summam, quae summam tetigerit, longior fiet.
All the features which are to be above the capitals of the columns, that is to say, architraves, friezes, cornices, tympana, pediments, acroteria, are to be inclined towards their fronts by a twelfth part of their height; because when we stand against the fronts, if two lines are drawn from the eye, and one touches the lowest part of the work, and the other the highest, that which touches the highest, will be the longer.
final_alignments\Vitruvius_Architecture_Book_3.json