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Archimedes Geo3D is a program for interactive geometry in three dimensions. You can

  • construct objects like points, lines, spheres, planes, triangles and many more
  • trace points, lines or circles to get locus lines or locus surfaces
  • drag objects and see the rest of the construction change accordingly
  • create your own macros
  • in short: do everything you would expect from an interactive geometry software, but in three dimensions!