Ruled

[Ruled] command generates a ruled surface with  two curves specified. The two curves are interpolated by straight lines.

Ruled

Step 1

For the prompt "Specify an edge curve of the surface", select an edge curve of the surface to generate.

Step 2

For the prompt "Specify the opposite edge curve", select the opposite edge curve of the Step1 curve.

After the selection, the command generates a ruled surface to append onto the document.