List of Triangle chapters

Triangle is an engineering fraternity that was established at the University of Illinois in 1907.^[1]

Chapters

In the following list, active chapters are indicated in bold and inactive chapters are indicated in italics.^[1][2][3][4]

Chapter	Symbol	Charter date and range	Institution	Location	Status	Reference
Illinois	ill	April 15, 1907	University of Illinois at Urbana–Champaign	Champaign, Illinois	Active
Purdue	pur	April 8, 1909	Purdue University	West Lafayette, Indiana	Active	[a]
Ohio State	os	February 2, 1911	Ohio State University	Columbus, Ohio	Active	[b]
Wisconsin	wis	February 7, 1913	University of Wisconsin–Madison	Madison, Wisconsin	Active	[c]
Kentucky	ky	October 31, 1920 – 1983; 2005	University of Kentucky	Lexington, Kentucky	Active	[d]
Cincinnati	cin	August 6, 1921 – 2005; 2014	University of Cincinnati	Cincinnati, Ohio	Active	[e]
Iowa	ia	May 7, 1922 – 1948	University of Iowa	Iowa City, Iowa	Inactive	[f]
Minnesota	minn	October 29, 1922	University of Minnesota	Minneapolis, Minnesota	Active	[g]
Armour	ar	May 26, 1923	Illinois Institute of Technology	Chicago, Illinois	Active	[h]
Missouri	mo	October 25, 1924 – 1933	University of Missouri	Columbia, Missouri	Inactive	[i]
Michigan	mich	February 21, 1925 – 1971; 1975–1995; 2007	University of Michigan	Ann Arbor, Michigan	Active	[j]
Kansas	kan	January 8, 1927	University of Kansas	Lawrence, Kansas	Active	[k]
Missouri Mines	mom	December 10, 1927	Missouri University of Science and Technology	Rolla, Missouri	Active	[l]
Penn State	ps	March 3, 1928	Pennsylvania State University	State College, Pennsylvania	Active	[m]
South Dakota Mines	sdm	September 27, 1930	South Dakota School of Mines and Technology	Rapid City, South Dakota	Active	[n]
Northwestern	nu	May 25, 1935 – 1987	Northwestern University	Evanston, Illinois	Inactive	[o]
Marquette	marq	April 24, 1937 – 2019; 2021	Marquette University	Milwaukee, Wisconsin	Active	[p]
Louisville	lou	March 22, 1941	University of Louisville	Louisville, Kentucky	Active	[q]
Cornell	cor	April 18, 1942 – 1985	Cornell University	Ithaca, New York	Inactive	[r]
Michigan State	msu	January 8, 1955	Michigan State University	East Lansing, Michigan	Active	[s]
Clarkson	cl	November 16, 1957 – 1970	Clarkson University	Potsdam, New York	Inactive
UCLA	ucla	December 7, 1957	University of California, Los Angeles	Los Angeles, California	Active	[t]
Nebraska	neb	March 16, 1963 – 2011; 2016	University of Nebraska–Lincoln	Lincoln, Nebraska	Colony
Iowa State	is	April 25, 1964 – 2011; 2018	Iowa State University	Ames, Iowa	Active
Kansas State	ks	September 7, 1964 – 2019	Kansas State University	Manhattan, Kansas	Inactive
Oklahoma State	oks	November 21, 1964 – 1995	Oklahoma State University	Stillwater, Oklahoma	Inactive
M.S.O.E.	msoe	January 23, 1965	Milwaukee School of Engineering	Milwaukee, Wisconsin	Active	[u]
R.I.T.	rit	February 4, 1967 – 2010	Rochester Institute of Technology	Rochester, New York	Inactive
Colorado State	csu	May 27, 1967 – 2006; 2012	Colorado State University	Fort Collins, Colorado	Active
Rose Tech	rose	May 4, 1968	Rose–Hulman Institute of Technology	Terre Haute, Indiana	Active
Colorado	colo	April 26, 1969 – 1972; 2023	University of Colorado at Boulder	Boulder, Colorado	Active	[5]
Pitt	pitt	April 4, 1970 – 2001; 2007	University of Pittsburgh	Pittsburgh, Pennsylvania	Active
UWM	uwm	April 11, 1970	University of Wisconsin–Milwaukee	Milwaukee, Wisconsin	Active	[v]
Toledo	tol	May 22, 1971	University of Toledo	Toledo, Ohio	Active
Mississippi State	miss	November 11, 1972 – 1987	Mississippi State University	Starkville, Mississippi	Inactive
Oklahoma	ok	November 18, 1979 – 2024	University of Oklahoma	Norman, Oklahoma	Inactive
Virginia Tech	vpi	April 19, 1980 – 1996; 2015	Virginia Tech	Blacksburg, Virginia	Colony	[6]
Connecticut	conn	March 27, 1982 – 1998	University of Connecticut	Storrs, Connecticut	Inactive
U.T.A.	uta	September 27, 1986 – 2000	University of Texas at Arlington	Arlington, Texas	Inactive
T.A.M.U.	tamu	April 9, 1988 – 1999; 2007–2009; 2024	Texas A&M University	College Station, Texas	Colony
Michigan Tech	mtu	April 16, 1988 – 2006; 2012	Michigan Technological University	Houghton, Michigan	Active
T.S.U.	tsu	April 15, 1989 – 2008	Trine University	Angola, Indiana	Inactive	[w]
Akron	akr	November 2, 1991 – 1997	University of Akron	Akron, Ohio	Inactive
Northern Illinois	niu	October 9, 1993 – 2006	Northern Illinois University	DeKalb, Illinois	Inactive
Maryland B.C.	umbc	June 4, 2005 – 2019	University of Maryland, Baltimore County	Catonsville, Maryland	Inactive
Houston	hou	April 19, 2008 – 2019	University of Houston	Houston, Texas	Inactive
UC Berkeley	cal	April 24, 2010 – 2016	University of California, Berkeley	Berkeley, California	Inactive
UCSan Diego	ucsd	February 11, 2011	University of California, San Diego	San Diego California	Active
UNC Charlotte	char	April 30, 2011	University of North Carolina at Charlotte	Charlotte, North Carolina	Active
Cal Poly Pomona	cpp	May 7, 2011	California State Polytechnic University, Pomona	Pomona, California	Active
UCI	uci	September 29, 2012	University of California, Irvine	Irvine, California	Active
Florida Atlantic	fau	September 7, 2013 – 2019	Florida Atlantic University	Boca Raton, Florida	Inactive
Penn State Behrend	psb	February 28, 2015	Penn State Erie, The Behrend College	Erie Pennsylvania	Active
Virginia Commonwealth	vcu	April 11, 2015	Virginia Commonwealth University	Richmond Virginia	Active
Utah	utah	April 25, 2015	University of Utah	Salt Lake City, Utah	Active
Clemson	clem	April 8, 2017	Clemson University	Clemson, South Carolina	Active
Washington	uw	May 21, 2022	University of Washington	Seattle, Washington	Active
Washington State	wsu		Washington State University	Pullman, Washington	Colony

1. Chapter formed from the Transit Club, established in 1908.
2. Chapter formed from the Transit Club, established in 1907.
3. Chapter formed from the Civil Engineers Club, established in 1912.
4. Chapter formed from the Kentucky Engineers Club, established in 1920. After going dormant, it reformed as a colony in 2004.
5. Chapter formed from the Civil Engineer Men, established in 1920. After going dormant, it reformed as a colony in 2010.
6. Chapter formed from the S.R.S. Club.
7. Chapter formed from Chi Sigma Tau, established in 1921.
8. Chapter formed from Scroll & Triangle, established in 1921 at the Armour Institute of Technology. Armour later became the Illinois Institute of Technology.
9. Chapter formed from Alpha Epsilon Rho.
10. Chapter formed from Quad L, established in 1924.
11. Chapter formed from Gamma Epsilon.
12. Chapter formed from the Grubstakers Club, established in 1902, at the Missouri School of Mines. The School of Mines later became the Missouri University of Science and Technology.
13. Chapter formed from Sigma Epsilon, established in 1925.
14. Chapter formed from Phi Kappa Phi, established in 1921.
15. Chapter formed from Kappa Phi Gamma, established in 1926.
16. Chapter formed from Gamma Theta Pi, established in 1922.
17. Chapter formed from the Pyramid Club, established in 1926.
18. Chapter formed from C.E.M., a local fraternity.
19. Chapter formed from the Triangle Club, established in 1953.
20. Chapter formed from the Triangle Club, established in 1956.
21. Chapter formed from Delta Alpha Epsilon, established in 1964.
22. Chapter formed by absorbing Sigma Delta Omega, established in 1956.
23. Chapter formed from Nu Pi, established in 1981, at Tri-State University. Tri-State later became Trine University.

Statistics

New chapters by decade

Decade	Total	New Chapters
1907–1909	2
1910–1919	2
1920–1929	10
1930–1939	3
1940–1949	2
1950–1959	3
1960–1969	9
1970–1979	5
1980–1989	6
1990–1999	2
2000–2009	2
2010–2019	10
2020–present (as of 2023)	1

Chapters by region

Region Total Chapters Northeast 7 Midwest 27 South 14 West 8