When you use any of the shapes available in PowerPoint, you are not limited to what their default appearance looks like. You may want to change a rectangle to a rhombus, or even edit a curved or freeform line differently. The good news is that you can do this by using the Edit Points option — this almost makes PowerPoint a drawing program that provides you the option to play with vertexes (points), handles, etc. — very similar to what you would do in Adobe Illustrator or CorelDRAW.
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