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
Bézier triangle Bézier triangle A Bézier triangle is a special type of Bézier surface, which is created by (linear, quadratic, cubic or higher degree) interpolation of control points. A general "n"th-order Bézier triangle has ("n" + 1)("n" + 2)/2 control points "a" "β" "γ" where "i", "j", "k" are nonnegative integers such that "i" + "j" + "k" = "n" . The surface is then defined as for all nonnegative real numbers "s" + "t" + "u" = 1. With linear order (formula_2), the resulting Bézier triangle is actually a regular flat triangle, with the triangle vertices equaling the three control points.