UCSD Triangle Fraternity

A Fraternity of Engineers, Architects, and Scientists where truth conquers all. Present as a chapter on the UCSD campus since 2011. Send us a message!

Founded in 1906 at the University of Illinois, Triangle is a fraternity of engineers, architects and scientists that has initiated over 28,000 men throughout the United States. Triangle alumni have gone on to become astronauts, co-found massive video game companies (Blizzard), and even win an Olympic gold medal. Since it's incorporation on April 15th 1907 (Founders Day) the fraternity has provided

Photos from UCSD Triangle Fraternity's post

04/16/2026

Today was national Founders Day, April 15th. We celebrated by getting a full chapter dinner (AKA - KBBQ)! 119 years ago our first chapter of Triangle was founded and here at UCSD we are proud to call are selves Triangle.

04/14/2026

Triangle x Six Flags 🎢

04/05/2026

We’ll be tabling Monday - Thursday on library walk from 10-3pm and we got events everyday Week 2‼️ Hope to see you there👀

03/24/2026

On March 15, the UCSD Chapter initiated these 6 men into our chapter👀
Congratulations to our newest brothers, we are proud to call them brothers‼️

03/05/2026

Last week, 5 of our triangle brothers took home Delta Idol Performance Winner as BTS(Best Triangle Singers) after performing “Super Shy” and “Everybody Talks.” 🎤
We’re incredibly proud of them for the time, energy, and confidence they brought to the stage!
Also huge thanks to for organizing such an amazing Delta Idol week and supporting St. Jude Children’s Hospital. Shoutout to everyone who helped us prepare and cheered us on!!!

02/21/2026

During January, three of our members were given the opportunity to go to Triangle’s National Leadership Trip Weekend! There, they got the opportunity to grow their knowledge to better help our local UCSD chapter. Congratulations to our brothers, Raymond, Leon, and Barrett, for taking this wonderful opportunity‼️