Collection of nearly 200 unusual problems dealing with congruence and parallelism, the Pythagorean theorem, circles, area relationships, Ptolemy and the cyclic quadrilateral, collinearity and concurrency, and more. Arranged in order of difficulty. Detailed solutions.

Challenging Problems in Geometry 1996, Dover Publications, New York, NY

ISBN-13: 9780486691541

2nd Revised edition

Trade paperback