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Leff, Lawrence S. Geometry the Easy Way. New York: Barron's Educational Series, Inc., 1984.

Moser, James M. Modern Elementary Geometry. Englewood Cliffs, New Jersey: Prentice-Hall, Inc., 1971.

Niles, Nathan O. Plane Trigonometry, 2nd ed. New York: John Wiley and Sons, Inc., 1968.

Popular pages: Review of Geometry II