Cuts made with the Scissors tool must be on a line or a curve rather than on an end point of an
open path. When you use the Scissors tool to click the stroke of a shape, which is the rectangle
in this example, the path is cut where you click so that it becomes open.Note
If you don’t click directly on a point or path, you will see a warning dialog box. You
can simply click OK and try again.
Select the Direct Selection tool ( ) in the Tools panel. Move the pointer over the selected
(blue) anchor point and drag it up.
Drag the other anchor point, from where you originally cut the shape, up and to the right (see
the figure).