If you look at the tip of a Shree Yantra, you would find only one of them which is exactly in line with the bottom base (other two are off centered). This is the Face of the yantra and it should face East. You may place the Shree yantra preferably near the West wall, so that the tip faces East. If not, then you may place on any wall, except the East wall. It should be placed in such a location which is visible from all sides of your living room, as it will affect all locations from where it is visible. The back of the yantra (exactly opposite the tip) does not show Aura, and is best if this is against the wall. The yantra is placed at height above your Navel (when standing) and below head.