Deleting a corner

  1. Move the helpers to the object whose corner you want to delete.
  2. Move the first helper to the corner that you want to delete.
  3. On the Model menu, click Delete corner.

More details here:

See also: Create objects | Headsup CommandLine | Rotate Precisely | Free rotation | Delete | Free Dragging | Delete a corner | Add a corner | Shift a corner | Undo | Redo | Precise move | Stretch Side | Extrude Side | Edge Type | Step Size | Advanced methods for setting attributes of an object | Searching Objects and Classes