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:

    One way to do it might be by making the scenery penetrate the automobile. A polished black sedan was a good subject, especially if parked at the intersection of a tree-bordered street and one of those heavyish spring skies whose bloated gray clouds and amoeba-shaped blotches of blue seem more physical than the reticent elms and effusive pavement. Now break the body of the car into separate curves and panels; then put it together in terms of reflections.
    Vladimir Nabokov (1899–1977)

    When a man opens the car door for his wife, it’s either a new car or a new wife.
    Prince Philip (b. 1921)