Windbreak Design Question on Equilateral Triangle

I must be a total idiot to not understand this permaculture concept, but should the trees be planted so the wind is flowing from left to right on the page?  Or from my face towards the monitor?  I've searched and searched and can't find the answer anywhere!!  (see Equilateral shape in attachment or in this link) https://www.newlifeonahomestead.com/permaculture-tips-for-cool-humid-to-cold-climates/

You're not an idiot at all!  I believe what the author is trying to convey is that the wind is flowing from either right to left, or from left to right.  The triangle is acting kind of like a ski-ramp or jump would.  The wind hits either side of the "jump" and then lands ~20 times the height of the tree, (according to that website).  If a nice garden or home is placed leeward inside of that distance, it is less susceptible to being hit or "landed on" by the wind.  Closer to the windbreak is usually more protected.    

THank you so much!