What is all the triangulum constellation information?

it is a star in the skyWhat is all the triangulum constellation information?Triangulum is NOT a star, as you write under your question. It is a constellation, which is one of 88 star groups recognized by the International Astronomical Union since a convention in 1925, based on boundaries first proposed by Benjamin A. Gould about 40 years earlier.

Triangulum is one of the smaller constellations. Its brightest star is sometimes called Atria, which is simply a condensing of its designation of Alpha Trianguli. The one thing Triangulum is noted for is that within its boundaries is the small spiral galaxy M33, which is a member of our Local Group of galaxies--the third largest member, although small as spiral galaxies go. Under ideal conditions it is barely visible as a fuzzy patch to the unaided eye. For more information on it, use Wikipedia.