Challenging Problems in Geometry Author : Alfred S. Posamentier Publisher : Courier Corporation Total Pages : 256 Release : 2012-04-30 ISBN 10 : 9780486134864 ISBN 13 : 0486134865 Language : EN, FR, DE, ES & NL GET BOOK Challenging Problems in Geometry Book Description: 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.