Which of the following is NOT a face relationship?

The correct answer is Angle. In Solid Edge, face relationships are used to define how two parts or faces are oriented relative to each other during assembly. The relationships typically applied to faces include Mate, Align, and Coaxial, which are used to control positional alignment and orientation of components.

The Mate relationship allows two faces to come together and control their positioning in the assembly. Align deals with ensuring that faces are oriented in the same direction. Coaxial, while not explicitly as common with face relationships, pertains to cylindrical surfaces ensuring they share the same axis, which is a critical aspect of positioning.

In contrast, Angle is more of a conditional relationship that typically applies to edges or features in Solid Edge, rather than directly to faces themselves. It is used to define the angular position between two edges or parts rather than how two faces are aligned or positioned in an assembly context. Thus, while Angle relationships are indeed utilized within the software, they do not fit into the specific category of face relationships.