
Create the points needed to define the line by using Insert > Control Point, Insert > Topological Points, or other geometric construction point interfaces.
Control Point in the Common User's Guide

Click LineStringByPoints on the Geometric Construction Palette.

Select the points used to define the line. Select the points in their order on the line string.

To extend the line string from the last point back to the first point, select Closed in the Closed Flag box.
A preview of the line displays.

Click Continue.
Temporary geometry displays in the graphic view and as LineStringByPoints in the Geometric Construction Explorer.

If needed, create additional geometric constructions.
If successive lines are created using Line by Points, the point selected for 2 of a line is the default selection for 1 of the next line.

Click Close to return to the main command ribbon.
The geometric constructions are not created and saved to the model until you click Finish on the main command ribbon and create the model object.