Creo Interactive Surface Design (Style) > Surfaces > Sweep Surfaces > About Sweep Surfaces in Style
  
About Sweep Surfaces in Style
Two elements are required to create a sweep surface:
Trajectory—Curve or curves that guide the sweep.
Cross-sectional sweep profile—Curve or curves that sweep along the trajectory.
There are two types of sweep surfaces:
Profile intersects the trajectory
One or two trajectories can be used.
One or more cross-sectional curves of any type can be used.
1. Trajectory
2. One cross-sectional profile
Profile does not intersect the trajectory
Only one trajectory can be used.
One or more cross-sectional curves can be used. The curves must be planar, and the plane on which the curves lie must intersect the trajectory.
1. Trajectory
2. Two cross-sectional profiles
1. Trajectory
2. One cross-sectional profile