A nice addition to PowerPoint 2007 is the ability to edit its built-in drawing shapes. Rather than having to draw an object from scratch using the Freeform shape tool, you can now take one of the built-in shapes and convert it into a Freeform shape. Once it is in Freeform shape, the points are editable, allowing you to add, delete, or convert points within the shape.
How do I convert a shape into an editable object?
After you have identified a shape that would like to edit, click on the object and then select the Drawing Tools > Format tab on the Ribbon. On the far left of the Ribbon within the Insert Shapes module, you will find Convert to Freeform within the Edit Shape dropdown (as shown in the image above).
Once the shape is converted to Freeform format, you can edit the points of the shape as you wish. This feature can be a great time saver as you build custom images for your PowerPoint presentations. You can take a shape that is close to what you need and simply make a few minor changes to it. This new option is much faster than having to draw a new shape from scratch. Depending on your freehand drawing skills, this technique can also give you more professional-looking results than if you had to draw something entirely by yourself point by point.