An Excellent introduction to architecture being a book of geometrical practice, which is the first degree of all arts : wherein is contained variety of examples of that admirable science ...
THE third forme is made by two foure corner'd squares, drawing Diagonen lines in them, which shall shew the two Centers G. H. and the other two corners E, and F. Then draw a piece of a Circle from F. to the fi∣gure 1. and so to 2. Do the like from E. to 3. and 4. which done from the points G. and H. make the two sides from 1. to 3 . and from 2. to 4. and so shut up the Ovale.
