"Geometry Expressions"

A new Geometry software has been released in May: "Geometry Expressions" which claims to be the world's first Interactive Symbolic Geometry System.

Using it one can define geometric figures by either Symbolic Constraints or numeric locations. Drawing can be generated via parametric, symbolic animation and measurements on drawing can be either presented numerically or expressed symbolically as mathematical equations.

All examples in online demonstrations looked very neat (click here). No doubt it would be a handy tool for many of us who were waiting for such a thing to appear for a long time. Once a student gets accustomed to the use of its toolbar and gains familiarity with its symbols, it would be hard to do geometry without this.

It's not a free package but it offers a no-cost trial. Visit homepage of Geometry Expressions to get a copy.