The program is the best, free alternative for tools that allow creating dynamic geometric constructions (dynamic geometry software, abbreviated as DGS), eg popular Cabri. CaR allows you to create Euclidian objects and geometric structures (drawn with a compass and ruler) - points, lines, polygons, circles, perpendicular, parallel etc. Construction points can have a variable position and be animated in real time.
The possibilities of the program and its application are very wide.
The program requires Java 2 Runtime Enviroment (JRE) libraries installed in the system, which can be downloaded in the PROGRAMS section -> Extras -> Libraries and other additions (see: Related Programs).