Actually it's not correct. Blender is one of the few 3D modelers that actually allows you extrude vertices. It's just much, much easier to start from a plane, which is a polygon, and build from there.

You can try this:

• Add a plane
• Tab to go to edit mode
• Press A to select all the vertices
• Press X to delete, select "delete vertices"
• Now you have a polygon with no vertices or faces.
• Press Ctrl-LeftClick. That will create a vertex.
• Continue pressing Ctrl-LeftClick to create more vertices.
• Now right click to select one vertex, Shift Right click to select another vertex
• Press F to link the vertices to create an edge.
• When you have enough edges, select two opposing edges and press F again to create a face.

Voila'! :)

Paolo

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