Regular polygons can be created by using
Curve > Primitive > Cirlce
with "Object Degree" as 1. The "Sections" will then control the number of sides.

Remember to detach the resulting curves at the knot points before using it to create surfaces. Try experimenting  with "Obeject degree" as 1 with surface primitives as well.

Please add your comments and feedback.

{fcomments}