What is .CG3 file extension?
3D image file created by Cabri 3D, an educational program used for teaching three-dimensional geometry; may store lines, planes, and shapes in a 3D space; may also include measurements.
CG3 files can be exported for display on the Web if you have the Cabri Web browser plug-in installed. When exported, an .HTML and .PNG file are generated in addition to the CG3 file.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.