The first decan of Aries is ruled by Mars and is represented by the constellation Triangulum, the sun begins it’s yearly journey around the sky in this face from March 21 thru March 31. Situated between Andromeda and Aries this star cluster is easy to miss at first. For the ancients this was not the case, the triangle being a symbol of the trinity, connection with god, a doorway metaphor (this constellation falls between the first and last signs of the zodiac), the delta from which life issues forth, and the multitudinous other religious applications of the triangle in general have been assigned to this constellation.
Understanding the triangle and how it applies to you and your craft is critical to understanding Triangulum. It may be the most abstract and yet profound of all the constellations.
If you have this card in your spread it represents activity with drive. Things will be happening for and around you, news of a business opportunity or a position of importance that comes unsolicited.