triangle /ˈtraiæŋɡl/ n. ［c］ 三角，三角形：solution by a triangle 三角形解法；a right-angled triangle 直角三角形；the triangle of forces 力的三角形

 triangular /triˈæŋɡjulə/ adj. 三角形的：a triangular relationship between Mary and the two men玛丽与两个男人间的三角恋爱关系It is triangular in shape. 它呈三角形。