C.a.R.
Original author(s)René Grothmann
Initial release1 January 1996 (1996-01-01)
Stable release
20.0 / 21 March 2022 (2022-03-21)
Written inJava
Operating systemLinux, Microsoft Windows, Mac OS X
TypeInteractive geometry software
LicenseGNU General Public License
Websitecar.rene-grothmann.de/doc_en/index.html Edit this on Wikidata

C.a.R.Compass and Ruler (also known as Z.u.L., which stands for the German "Zirkel und Lineal") — is a free and open source interactive geometry app that can do geometrical constructions in Euclidean and non-Euclidean geometry. The software is Java based. The author is René Grothmann of the Catholic University of Eichstätt-Ingolstadt. It is licensed under the terms of the GNU General Public License (GPL).

Assignments

Assignments make possible to create Java applets, for a construction exercises. These applets can be used from the command line using the AppletViewer. (Previously, they could be run in a browser, but Java support in browsers has been disabled in recent years.)

See also


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