C.a.R. is described as '(Compass and Ruler) is an interactive geometry program for simulating compass-and-ruler constructions on a computer. It supports many advanced features including: macros, construction animations, drag-and-drop construction, arithmetic computations, numerical solutions' and is an app. There are five alternatives to C.a.R. for a variety of platforms, including Windows, Mac, Linux, Web-based and Android apps. The best C.a.R. alternative is GeoGebra, which is free. Other great apps like C.a.R. are Winplot, Cabri, Cinderella and Geometry Expressions.
GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching. It has received several educational software awards in Europe and the USA.
"Winplot is a free graphing utility that was written by Richard Parris, a math instructor at Phillips Exeter Academy in Exeter, New Hampshire. Sadly Richard passed away in 2012. After Richard's death the program was still available for a number of years on the Exeter...
Cinderella is the interactive geometry software and a universal tool for visualization and simulation of data and algorithms written in Java programming language. Cinderella is Math in motion.
Geometry Expressions is the world's first interactive symbolic geometry system. Create geometric figures using symbolic constraints and produce measurements not only numerically but also symbolically.
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