Building the Foundation of the Design - Autodesk Inventor 2010: No Experience Required - page 102

FIGURE 2.51 A sketch can be made away from where it will finally
be placed.
5. Use Esc to end the Rectangle tool.
6. Drag your mouse around the rectangle to select it. See Figure 2.52.
FIGURE 2.52 Drag selection works like it does in AutoCAD.