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1. Introduction

Dr GEO is an interactive geometry software. It is *freeware*, so you don't need to pay for it. Dr GEO is freely distributable as long this archive is not changed and I, the author, is informed about a distribution. I could then send you the latest version.

Dr GEO allows the construction of interactive geometric figures. It's an educational oriented software. So I took care of the design of the Dr GEO user interface. It uses the mouse intensively and allows advanced features such as contextual menu and textual feedback of any geometrical element under the cursor. Students feel at ease using Dr GEO. I have experimented with its use with students from eleven years old and find that they master the interface very quickly. This software can be used by mathematics teachers in a class room to demonstrate a point or with students in a computer class room carrying out their own investigation. Dr GEO can aslo be used by students helping them to resolve geometric homework. Almost any geometry lover will find it a useful investigational tool.

Dr GEO can handle different national languages. Currently Chinese, English, French and Spanish are supported but more has been ported by volonteers. Feel free to write to the author if you encounter nasty bugs or for any remarks concerning Dr Geo and its use.


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