I think you cannot, because the program has a different approach. Each theorem should be true independently of coordinates.
(Internally, there are, of course, coordinates: if you create a point, you can right-click on it and choose Properties, there you can change the coordinates manually.)
Best, Zoltan
--
Dr. Zoltán Kovács, MSc
Institut Ausbildung
Private Pädagogische Hochschule der Diözese Linz Private University of Education, Diocese Linz Salesianumweg 3, 4020 Linz Mail: zoltan...@ph-linz.at