Schaum's outline of geometry by Rich, Barnett 1906-, Thomas, Christopher 1973-

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Convex functions constructions, characterizations and counterexamples by Borwein, Jonathan M., Vanderwerff, Jon D.

A gateway to modern geometry the Poincare half-plane by Stahl, Saul

Geometry and the imagination. by Hilbert, David, 1862-1943

Euclidean and non-Euclidean geometries development and history by Greenberg, Marvin J.

Euclidean and non-Euclidean geometry an analytic approach by Ryan, Patrick J.

Some geometrical properties and physical applications in a non-Euclidean universe [microform] by Lesaca, Reynaldo M. 1922-

Euclidean and non-Euclidean geometries by Greenberg, Marvin J.

Euclidean and non-Euclidean geometries development and history by Greenberg, Marvin J.

A modern introduction to geometries. by Tuller, Annita 1910-