by Polaris » Sun Apr 16, 2017 3:54 am
It's composed of 3 stars (Vega, Altair, and Deneb), which are the brightest stars in their respective constellations.
- Vega -- Lyra, the Harp
- Altair -- Aquila, the Eagle
- Deneb -- Cygnus, the Swan
The Summer Triangle isn't an actual "constellation" though, but rather an imaginary pattern that people refer to xD