Using the Expand Tool
The Expand tool lets you select additional rows of facets around the current selection.
To expand facets:
Using the same steps above, facet edges can be expanded to adjacent triangles.
 
                Facet vertices can also be expanded to adjacent triangles.
 
                
 to select a row of facets around the current
                    selection.
 to select a row of facets around the current
                    selection.