Follow
https://en.wikipedia.org/wiki/Triangle_Fraternity
Triangle 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.
Triangle Fraternity is one of three national fraternities not to have Greek letters, the others being Acacia and FarmHouse.