Now, drag the oval shape over the number that you want to circle. 2] Using Symbol. On the Insert tab, click the Text button and select Text Box from the menu. Draw the text box on the spreadsheet.

Click a semi-circle shape, found under the Basic Shapes section. Position the cursor anywhere on the white PowerPoint slide. Press and hold down the left mouse button and drag to form the semi-circle.

Right-click the hollow circle and choose Format Shape to open the Format Shape pane. Choose Gradient Fill in the Fill section. From the Preset gradients, choose Top Spotlight–Accent 5.

To create a dual-color circle, you'll need a few tricks up your sleeve because PowerPoint doesn't have a semi-circle shape. Learn two ways to create semi-circles, so you can combine them.

Test your vision with a captivating optical illusion that hides a number within a neon green circle. Besides being a fun ...