Get started with C.a.R.
C.a.R. is a dynamic geometry program written by R. Grothmann.  Visit the English version of the software homepage here. You can access the program online as a Java applet or download the program file (executable Java archive) to run it in your computer. If the program cannot run properly in your computer, try to update your Java software (which you need for running any program or applet written in Java) at www.java.com.
See also the introduction of C.a.R. in the MathsNet.

This page contains viewlet files, which are animated screen shots, showing detailed procedures in trying, downloading and installing the program. Click the file icons on the right to open the viewlets.

Try the Program Online
Install the program and documentation
Make the first construction and save
Prepare html files embedding C.a.R. constructions