Noun
The center of a circle that circumscribes a triangle.
Source: Webster's dictionaryUnlike its triangular counterpart, this center lies one third of the way from the Monge point M towards the circumcenter. Source: Internet
Thales' theorem implies that if the circumcenter is located on one side of the triangle, then the opposite angle is a right one. Source: Internet
Euler's theorem states that the distance d between the circumcenter and the incenter is given by : p.85 : or equivalently : where R is the circumradius and r is the inradius. Source: Internet