About this article Cite this article W., F. (1) Principles of Geometry (2) Higher Geometry: An Introduction to Advanced Methods in Analytic Geometry (3) Elements of Projective Geometry.

P. O. Bell, A Study of the Projective Differential Geometry of Surfaces by Means of a Modified Tensor Analysis, Transactions of the American Mathematical Society, Vol. 60, No. 1 (Jul., 1946), pp.

The various metrical geometries, both Euclidean and non-Euclidean, are discussed, and Euclidean geometry is shown to be a special case of the general projective metrical geometry.