There are a few ways to add shapes to Adobe Illustrator. The first way is to use the Polygonal tool. This tool can be used to create polygons, which are shapes that have a specific shape. To add a shape to your document, click on the Polygonal tool and drag it into the desired position. You can also use the arrow keys to move the polygon around. The second way is to use the Selection tool. This tool can be used to select a part of your document and then drag it into another part of your document. The Selection tool is also great for moving objects around in your document. The last way is to use the Freehand tools. These tools can be used to create freehand shapes, which are not as specific as polygonal shapes but they are still great for creating basic shapes in your document.