Challenging Problems in Geometry (Dover Books on Mathematics)

Challenging Problems in Geometry (Dover Books on Mathematics) by Alfred S. Posa

Challenging Problems in Geometry (Dover Books on Mathematics)

Challenging Problems in Algebra (Dover Books on Mathematics) - VERY GOOD

Challenging Problems in Geometry by Posamentier, Alfred S.; Salkind, Charles T.

Fundamental Concepts of Geometry (Dover Books on Mathematics) - Paperback - GOOD

From Geometry to Topology (Dover Books on Mathematics) - Paperback - GOOD