where is the center of gravity in a triangle
Centroid The centroid of a triangle is the intersection of the three medians of the triangle (each median connecting a vertex with the midpoint of the opposite side). It lies on the triangle's Euler line, which also goes through various other key points including the orthocenter and the circumcenter.[1][2]
Square and Compasses In many English speaking countries, the Square and Compasses are depicted with the letter "G" in the center.[3] The letter has multiple meanings, representing different words depending on the context in which it is discussed. The most common is that the "G" stands for Geometry, and is to remind Masons that Geometry and Freemasonry are synonymous terms described as being the "noblest of sciences", and "the basis upon which the superstructure of Freemasonry, and everything in existence in the entire universe is erected. In this context it can also stand for Great Architect of the Universe (a non-denominational reference to God)."[4]