Part Modeling > Engineering Features > Designated Annotation Areas > Example: Creating a Designated Area by Trimming a Curve
  
Example: Creating a Designated Area by Trimming a Curve
The designated area is created on a solid model and the target surface is the area of the trapezoid.
The chain set includes the following 4 edges:
The bottom edge is trimmed to the straight line.
All the curves are trimmed and the designated area is fully defined.
The designated area is flipped to exclude the area of the trapezoid and include all other model surfaces.