graphic2
graphic1

Exam 77-422: Microsoft PowerPoint 2013
3.0 Create Slide Content
3.4 Insert and Format SmartArt: Format SmartArt Shape(Change Size)

Format Shapes: Larger

Shapes can also have different sizes.

 

3. Try it: Make the Shape Larger

The SmartArt is selected on Slide 4.

The "Cat" Shape is selected.
Go to SmartArt Tools->Format-> Shapes.

Click on Larger.

What Do You See?
Each time you click on Larger, the Shape increases in size. As the Shape gets larger, the other Shapes may become smaller to fit the SmartArt graphic. You can select the picture and make it larger as well.

 
Of course, there is more...

SmartArt Tools->Format->Shapes->Larger

You can't be too thin or too rich...