We can, perhaps, now understand, a little of where this diagram is coming from.
It may be that this figure is supposed to represent a tetrahedron, yet because of its overt Patriarchy it is tempting to see a hidden second point on the underside which reads Goddess, with the reverse of, The Son, sphere being, The Daughter, and the reverse of, The Father, sphere being, The Mother.
This is, probably, not quite what the Holy Fathers had in mind, though.
We may hope that The Holy Spirit is way beyond such gender wrangles.
Source: Stuart France