Yes. Open the Inspector, and click on the tab with the ruler. At the bottom is a "Rotate" thingy. Click the text box to select it, then you can either just type in the rotation in degrees, or turn the wheel. Typing is more precise - if you want exactly 90, or 45, or 180 it's hard to get that number with the wheel. There is no 360 - you have to type 0.
Good Luck. And cheers.