Adding Faces to Polygon
Maya 8.0 Tutorial
How to Add Polygon Faces with the Maya Append to Polygon Tool
One method of building a complex polygon object is to start with a single polygon and add faces by building outward one face at a time. Another method is to extrude edges.
For more information on extruding, see topic, Extruding Polygon Edges.
Using the Polygons menu set choose Mesh > Create Polygon Tool and draw a four sided polygon. Click in a counter-clockwise direction. Press the Enter key to close the polygon.
With your object selected, choose Edit Mesh > Append to Polygon Tool and click on the source edge that you will be adding to.
Notice that the edge displays a starting point and shows the direction of the selected edge. Click in a counter-clockwise direction to add points two and three. The object displays a dotted line to show you how the new polygon will be closed. If you are satisfied with the suggestion, press the Enter key to close the polygon.