Triangle Fraternity is a social fraternity, limiting its recruitment of members to male students majoring in engineering, architecture, and the physical, mathematical, biological, and computer sciences. It is the only member of the North-American Interfraternity Conference to limit its membership recruitment to these majors.
Triangle Fraternity organized at the University of Illinois at Urbana-Champaign in the fall of 1906 and was incorporated by the state of Illinois on 15 April 1907, which is celebrated each year as Founders' Day.
There are currently thirty-five chapters and eight colonies of Triangle Fraternity active in the U.S. The headquarters is located in Plainfield, Indiana in a historic building built as a Carnegie library in 1912.
Because Triangle's focus is on men of mostly similar fields of study, it is thought that members are more likely to be able to help each other succeed in their college studies. This focus also helps with professional networking later in life, particularly as there are alumni groups scattered throughout the world.
Triangle's beginnings came from the desire of some congenial college friends to extend their friendship, not only through college, but also for life. In the fall of 1906, sixteen Civil Engineering juniors at the University of Illinois began the association that became Triangle Fraternity. These founders based their organization on the principles of honor, friendship, character, brotherhood, courage, and ideals. They quickly developed plans and, on 15 April 1907, incorporated Triangle in the State of Illinois. The date of incorporation has been designated as Founders' Day, and Triangle appropriately celebrates it every year at each chapter.
Triangle Fraternity was founded on high ethical and moral ideals, and expects the men of the fraternity to follow a set Code of Ethics, which is as follows:
As a member of Triangle, I recognize my obligation to: