Geometry elemental is that of straight lines and of the circle Transcendental, is that of all other curves; it includes of course
I am amazed they didn't include triangles in their description of geometry. I wonder if geometry was easier in those days because triangles were the worst part of geometry. I imagine basic math was more simple in those days because there would be less demand for higher level math due to the limited technology of the time. JD Buchholz