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To check the Gergonne-Soddy-Incenter property in
this CabriJava
figure, drag any of the vertices of the triangle.
The points are not labelled in order to keep the
drawing as clear as possible, instead the three
points have a different colour : the blue one is
the Incenter, the green one is the Gergonne point
and the red one is the Soddy center.
Double click on the figure to get
an enhanced interface, you will for example have
access to a button to download the corresponding
Cabri file. To ensure the best animation, you may
get MRJ 2.1.4.
Acknowledgements : many
thanks to
Bernard Genevès
who prepared this figure and to the CabriJava
Project manager Gilles
Kuntz who efficiently
support the publication of the Proof
Newsletter.
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