Iron Triangle (Vietnam) Iron Triangle (Vietnam) The Iron Triangle (Vietnamese:"Tam Giác Sắt") was a area in the Bình Dương Province of Vietnam, so named due to it being a stronghold of Viet Minh activity during the war. The region was under control of the Viet Minh throughout the French war in Vietnam and continued to be so throughout the phase of American involvement in the Vietnam War, despite concerted efforts on the part of US and South Vietnamese forces to destabilize the region as a power base for their enemy, the communist North Vietnamese–sponsored and–directed South Vietnamese insurgent movement, the National Liberation Front
Triangle center honor of Clark Kimberling who created the online encyclopedia of more than 9000 triangle centers, the triangle centers listed in the encyclopedia are collectively called "Kimberling centers". A triangle center P is called a "polynomial triangle center" if the trilinear coordinates of P can be expressed as polynomials in "a", "b" and "c". A triangle center P is called a "regular triangle point" if the trilinear coordinates of P can be expressed as polynomials in Δ, "a", "b" and "c", where Δ is the area of the triangle. A triangle center P is said to be a "major triangle center"