Lesson summary

Once a region exists, two workflows are available for creating a base feature: the selection workflow (synchronous environment) and the creation workflow.

Surface shapes are directly tied to the curves defining those surfaces. Therefore, the control of curves is crucial in modifying surface topology.

You can use construction and reference elements to help you construct features. For example, when constructing a hole feature, you can draw a construction line to help you position the hole properly. You can use the Construction command to change a sketch element into a construction element. Reference elements are planes and axes used to define sketch planes, extrude extents, and revolve axes.