Below is an applet with drawing tools for the spherical model of
elliptic geometry.
(Be patient; the applet takes a few seconds to load.)
Use the menu on the far right to access the tools of elliptic geometry in
this model.
Acknowledgment: The underlying applet spherical.ggb was written by Tevian Dray in 2022. It may be used under a by-nc-nd Creative Commons license.