Leaning Wall Mirror What Is The Best Way To Hang A 35# Wood Framed Mirror So It Won't Fall And Will Hang Flat Against The Wall?

What is the best way to hang a 35# wood framed mirror so it won't fall and will hang flat against the wall? - leaning wall mirror

I do not know what kind of use the hook on the back of the mirror or on the wall. I want to hang on the wall and not to bend forward as far as I've seen. Moreover, I am afraid it is safe, we did not worry about a decline.