When making scans, I accidentally have all the pages upside-down. I went through and flipped each individual page horizontally and vertically (since I didn’t see an option for rotating 180 with the page centered), but I was wondering if there was an easier way to edit all the pages of the whole document and flip them right-side up in the future in case others encounter this problem?
Short of a macro I cannot see a way to rotate objects in every page at once.
Rotate automatically rotates around the centre of the object unless you shift the rotation point elsewhere. Click an object a second time so the square handles turn to round handles (you should see an extra "handle’ in the centre which is the rotation point), place the cursor over a corner handle until you see a circular arrow, hold down Shift and turn object.
Holding down Shift will constrain angle to 15° increments so it is easy to do a 180° rotation accurately.