How do you rotate inserts in Apple Mac OS preview 7? It happens that I noticed a text insert I had  pasted in an  image in Preview 7 (Sierra on MacBookAir had been rotated
I don't know how this happened but the text insert is definitely not horizontal.
So there must be a way to rotate inserts. I haven't yet found out.
Can anyone tell me?
You can rotate inserts and annotations, like text boxes, rectangles or signatures, by arbitrary angles:

Hold the Command ⌘ key and rotate the selected annotation with two fingers on a trackpad. 

As far as I know this only works with trackpads and is undocumented. It works on macOS High Sierra.

This is from an apple communities question: How can I rotate the text box in Preview