The
Free Transform tool lets you scale, rotate, skew, and perspective-distort your shapes. Simply select a shape or symbol (or multiple shapes or symbols), click the Free Transform tool, and then use the handles on the bounding box to click and drag to apply transformations. As you can see in the image above, you can select a fill independent of its stroke (or vice versa) and scale it on its own.
By default you can perform all four functions of the Free Transform tool simply by moving your mouse cursor to different areas of the bounding box until it changes to the appropriate symbol to depict the transformation that you want. However, you can lock the tool to a single transformation, as well.