shaped like a triangle; having three sides and three corners 三角形的 dainty triangular sandwiches. 可口的三角形三明治。 ■involving three people or parties 三人之间的;三方的 a triangular cricket competition. 三方板球赛。 ■(of a pyramid) having a three-sided base (金字塔)有三角形底的
派生 triangularity noun triangularly adverb 语源
mid 16th cent.: from late Latin triangularis, from Latin triangulum (see triangle)