C.a.R.

From Wikipedia, the free encyclopedia

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.

Licensed under the terms of the GNU General Public License (GPL).

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