After adding text within a shape (or a text box) in PowerPoint, you can also perform basic edits like adding, deleting, or replacing existing text. Other than the basic text editing you can even control how your text is aligned within the shape. To do that you need to access these options within the Format Shape Task Pane.
To learn more, choose your version of PowerPoint. If we do not have a tutorial for your version of PowerPoint, explore the version closest to the one you use.
Align Text within Shapes and Text Boxes in PowerPoint 2016
Align Text within Shapes and Text Boxes in PowerPoint 2013
Align Text Within Shapes and Text Box in PowerPoint 2010
Align Text within Shapes and Text Boxes in PowerPoint 2016
Align Text Within Shapes and Text Boxes in PowerPoint 2011
Microsoft and the Office logo are trademarks or registered trademarks of Microsoft Corporation in the United States and/or other countries.