. We give a survey of the current status of geometric algorithm visualization and offer some suggestions regarding geometric software library and future directions for visualization software. 1 Introduction Since its inception two decades ago computational geometry has become a very active research field within theoretical computer science. There are a good number of research publications collected in pub/geometry/geombib.tar.Z, available via anonymous ftp from ftp.cs.usask.ca. Several journals dedicated to computational geometry have been established. The reader is encouraged to visit the Web page on Geometry in Action by D. Eppstein at http://www.ics.uci.edu/ ~eppstein/geom.html and computational geometry page by J. Erickson at http:// www.cs.berkeley.edu/~jeffe/compgeom.html for more information. Only recently an informal assessment of the impact of the field on other science and engineering disciplines was conducted and the questions of its relevance to practice were raised among...