books.google.co.uk - " Who has not seen a picture of the Great Pyramid of Egypt, massive in size but deceptively simple in shape, and not wondered how that shape was determined? " Starting in the late eighteenth century, eleven main theories were proposed to explain the shape of the Great Pyramid. Even though some of these...http://books.google.co.uk/books/about/The_shape_of_the_Great_Pyramid.html?id=066T3YLuhA0C&utm_source=gb-gplus-shareThe shape of the Great Pyramid