The five of Hilbert's Axioms which concern geometric equivalence.

**References**

Hilbert, D. *The Foundations of Geometry, 2nd ed.* Chicago, IL: Open Court, 1980.

Iyanaga, S. and Kawada, Y. (Eds.). ``Hilbert's System of Axioms.'' §163B in
*Encyclopedic Dictionary of Mathematics.* Cambridge, MA: MIT Press, pp. 544-545, 1980.

© 1996-9

1999-05-26