Iron Triangle (Vietnam) bureau members Phạm Hùng and Lê Đức Thọ, and southern military commander Trần Văn Trà all joined together in the Iron Triangle region to orchestrate the final, decisive attack on Saigon. The area had remained allied with the nationalist communist forces from the beginning of the French war in 1946 to the fall of Saigon in 1975: an exception in a country often torn region by region between control by American forces and control by the Viet Cong. Iron Triangle (Vietnam) The Iron Triangle (Vietnamese:"Tam Giác Sắt") was a area in the Bình Dương Province of Vietnam, so named due
Conway triangle notation Conway triangle notation In geometry, the Conway triangle notation, named after John Horton Conway, allows trigonometric functions of a triangle to be managed algebraically. Given a reference triangle whose sides are "a", "b" and "c" and whose corresponding internal angles are "A", "B", and "C" then the Conway triangle notation is simply represented as follows: where "S" = 2 × area of reference triangle and in particular Furthermore the convention uses a shorthand notation for formula_14 and formula_15 Hence: Some important identities: where "R" is the circumradius and "abc" = 2"SR" and where "r" is the incenter, formula_22 and formula_23