Add/create an arrow and change it's rotation?

Baffling. I can see how to add an arrow (Insert > Shape > Arrow) and the arrow is somewhat editable. But what apparently is NOT editable, at least in any intuitive or obviously way, is where the arrow is pointing. A big fat arrow lands on the page and points to the right. How do I rotate the arrow? All the corner points edit the shape and size, absolutely nothing regarding orientation. Baffling.

Thank you