C.a.R.

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 software that can do geometrical constructions in Euclidean and non-Euclidean geometry. The software is Java based. The author is R. Grothmann of the Catholic University of Eichstätt, Germany. It is licensed under the terms of the GNU General Public License (GPL).

Famous quotes containing the word car:

    “Between here and that old car outside there are twenty-five paces. Make them. Now.”
    —Vladimir Nabokov (1899–1977)

    “The car has become the carapace, the protective and aggressive shell, of urban and suburban man.”
    —Marshall McLuhan (1911–1980)