Of course us FASA diehards are looking at those maps and wondering where the Triangle is.
It's actually there, sort of. The FASA map is very different than that map, with the Klingon Empire "south" of Earth and straddling the quadrant line, and the Romulan Empire about where the Klingons are, with Orion space wedged in the middle somewhere and a horizontally arranged Federation.
On the map I linked, the Triangle would be right next to the Azure Nebula. In STO it would be closer to the Hromi Cluster if the map were filled in.