Angles in charts

I am sorry if I am asking this question in the incorrect forum but I do not see a proper place to ask it.
I am studding Point and Figure charting. In my lesson it says that bullish and bearish support trend lines are always a 45 degree angle in point and figure charting. Is there a way to draw a true 45 degree angle without holding a protractor up to my screen?

Thank You
Mr. Steve

which charting package do you use ?

My charting program is Trade Navigater by Genesis. I have in an earlier post ask about other software packages but have not tried any others. I like this one because I can make up my own criterias (sometimes), and at $700.00 it was affordiable. I also use Option Express charts for real time quotes.

Mr Steve
I'm not familiar with your charting package but I have a piece of stiff paper that I have cut a 45 degree angle with half screen size. I just hold it up to see if it matches.
I find angles interesting as I've noticed that if my moving averages are at 33 - 37 degrees I can get in on any pullback early in the day for a trade in that direction. Sounds novice but it embraces "trade with the trend motto"

Thank you, I gusee I will have to do the same. If a lot of traders believe in this I am supprised the charting packages have not adoptrd it. I have several articals that refer to 45 and 38 eg.
Oh well, thanks for the advice I appreciate you taking the time to try and help.
Mr. Steve

My typing is terriable today, I better re-read my messages befor I post.