Construction Geometry can be defined as planes, surfaces, axis, and edges that will support the creation of GD&T in 3DEXPERIENCE. The Construction Geometry can also be created to help define dimensions or other GD&T definitions. Users can create Construction Geometry, through creating surface or solid geometry by having to go into the Generative Shape Design app or through the Tolerance Advisor or using Construction Geometry toolbar:
(Taken from 3DEXPEREINCE 2018x)