Illustrator is a powerful graphics application offered by the Adobe corporation. Since it is vector based, it produces files that are smaller than bitmap images, while at the same time being infinitely expandable without loss of resolution. One project you might carry out in Illustrator is a pie chart. To make the chart more visually interesting, you might decide that you would like to add a hole on the centre.
Start the Illustrator application. Select "File" from the menu and choose "New." In the dialogue that appears, enter the width and height you want for the pie chart and click "OK."
Select the "Ellipse" tool from the tool bar on the left and change the fill colour at the top to the colour that will fill the largest part of your pie chart. Hold down the "Shift" key and drag out the circle for the pie chart.
Go to the "Layers" panel and lock the layer. Then click on the "New Layer" button.
Select the "Pen" tool from the toolbar. In the options, change the fill colour to the colour you want for the second largest wedge in the pie chart.
Use the tool to place points and lines defining the shape of the second largest wedge. You can match the curve of the circle by dragging when you add the points in that area.
Repeat steps 4-5 to add all of your wedges. Then use the "Ellipse" tool to add a centre circle that matches the background colour you will be placing the chart against. Save your work.