Rotating and obtaining the final profile

Make sure that the activated layer is the "profile" layer. (Use the option To use or simply double-click the layer).
In the Copy window, select the line rotation (Lines, Rotation).
Enter an angle of 36 degrees. Make sure that the center is point (0, 0, 0) and that you are working in two dimensions.
In the Multiple Copies box enter 9. This way, 9 copies will be made, thus obtaining the 10 teeth that form the profile of the model (9 copies and the original).
Ensure that Collapse is set, to avoid duplicated points on the same location.
Click Select and select the lines defining the profile. Press the ESC key or click Finish in the Copy window in order to conclude the operation. The result is shown in next figure.

The part resulting from this process

GiD user manual