In Illustrator, shapes can be created in a number of ways. One way is to use the Pen tool and draw out the desired shape.
Another way is to use the Rectangle, Oval, Polygon, Ellipse, and Path tools. Each of these tools has its own set of options that allow you to create specific types of shapes.
Another way to create shapes is to use the Pathfinder panel. The Pathfinder panel allows you to move, resize, and rotate objects within a composition.
This can be helpful when you need to create specific shapes.