Drawing ellipses and circles
You can draw ellipses and circles using either the Ellipse Tool or the QuickShape Tool. (The Ellipse Tool is generally more convenient to use.)
 To draw an ellipse 
 or circle
 To draw an ellipse 
 or circle
1. Choose the Ellipse Tool or QuickShape Tool. (If you use the QuickShape Tool, click the Ellipse button on the QuickShape Tool Infobar)
2. To draw an ellipse select the Bounds Creation Button on the Infobar. Drag diagonally to create the ellipse.
3. To draw a circle select either
 Click the Radius 
 Creation 
 Button on the Infobar. Create the circle by dragging from the center outwards.
 Click the Radius 
 Creation 
 Button on the Infobar. Create the circle by dragging from the center outwards.
 Click the Diameter 
 Creation 
 Button on the Infobar. Create the circle by dragging across the diameter 
 of the circle.
 Click the Diameter 
 Creation 
 Button on the Infobar. Create the circle by dragging across the diameter 
 of the circle.
Tips
 Holding down CTRL during a By Bounds 
 drag creates a circle instead of an ellipse.
 Holding down CTRL during a By Bounds 
 drag creates a circle instead of an ellipse.
 Holding down Shift during the drag 
 forces creation from the center of the ellipse or circle.
 Holding down Shift during the drag 
 forces creation from the center of the ellipse or circle.
Movie—click below (not working in this version)