I created a shape (not a path) in PS, but forgot to close the shape by clicking on the first point after drawing it with the pen tool. How do I close the shape after I've moved on and forgot? It looks fine without closing it, but I can't create new points on the last line segment since it was never closed.
Most importantly take Pen Tool and make sure you have Auto Add/Delete selected.
After that hold down Ctrl+Alt buttons to temporarily activate Path Selection Tool and click your Shape to select it.
Then just click to one of the points that isn't closed and then click to the next point to close the path.
Symbol for point that isn't closed.
After clicking point that isn't closed, hovering over another similar point will show this symbol.
After struggling with this silly little question myself, I figured I try and help the next person. I ran into this problem by using custom shapes, then deleting parts that I didn't want/need. This would leave me with an unclosed shape that does odd things when manipulating.
To resolve, use the direct selection tool and click and drag over both shapes/paths that are not closed, highlighting/selecting both shapes/paths. Next, hit U on the keyboard to bring up Shape/Path toolbar. Click on the Path Operations icon (the little double square icon) and select the bottom choice, Merge Shape Components.
Six years tardy to the OP, but hopefully helps somebody down the line.