Triangle names the chapters after the college. A few still keep the old college name. IIT chapter uses the designation "Armour" chapter.
FarmHouse is similar, as does Ceres (sorority).
A number of UC Berkeley locals became part of nationals, and use the local name as their chapter designation (while the other chapters use Greek letters). Delta Chi uses "Abracadabra" as a chapter designator.
Alpha Gamma Sigma uses "Illidell" as a chapter designator.
Hybrid Mode
