I disagree.
How many degrees are in a turn of rope in your opinion?
Whatever is indicated...
And what is it when it isn't indicated? If someone asked you to place a turn of rope around a mast, how many degrees would you go?
Back to the original question, how many degrees is a Round Turn?
For about the fifth time, if someone says "add 3 Round Turns", then the correct response is to add 3 x 360 degrees of turn. There is no mind trick, philosophical debate or new definition needed. There is no situation where Round Turn means 540 degrees. Again, in the knot "Round Turn and Two Half Hitches", the initial 180 degrees is implied, and the Round Turn is still 360 degrees.