KSEG Rocks

After trying Cabri Geometry, GeoGebra and Geometer's Sektchpad, I feel KSEG is the best one with GeoGebra a close second. The reason KSEG stands out is
1. Its the fastest in drawing
2. Very intuitive and having the highlighted button features
3. ts free and robust on Linux
4. The points are easy to see and can be easily
chosen by the click of Mouse compared to other Geometric Softwares (GeoGebra is an exception)
GeoGebra is very close behind KSEG and it is just getting better. With applet feature and a promised funding it surely going to improve and become the number one choice for Geometry Softwares. Plus the best pt about GeoGebra is one doesn't need to install it. The figures you are looking is the solution to an internal reflection problem I solved using KSEG. I repeated that in GeoGebra but KSEG was faster. Meanwhile I have yet to take a look at the KIG but open software movement behind it and so I am sure it will be very good too.