A great many of the stories, teachings, structures and symbols of Vendrith come in threes. One example is the Sibling Dragons themselves. Another is the three-part nature of the Mythos of Vendrith they are but one third of.
The Titans often entered into Titan Trinities representing different approaches or perspectives to similar subjects. In this tradition it is common to see one titan as above the others in a hierarchy akin to the shape of a triangle pointing upward.
In other traditions, trinities are supposed to represent more or less equal positions. Sometimes the triangle is inverted, with the two positions on top representing offshoots from the original position at the bottom.