triangles 是 triangle 的複數triangleKK [ˋtraɪˏæŋgəl] /ˈtɹaɪˌæŋɡəl/名詞1三角形The three angles of a triangle always add up to 180 degrees.三角形的三個內角和一定是一百八十度。2三角形物體、三角區She cut the sandwiches into neat little triangles.她把三明治切成一個個整齊的小三角形。3三角關係The novel centers on a love triangle between three old friends.這部小說圍繞著三個老朋友之間的三角戀情展開。4三角鐵樂器He tapped the triangle lightly at the end of each phrase.每個樂句結束時,他都輕敲一下三角鐵。5三角板、三角尺Use a triangle and ruler to draw the parallel lines accurately.用三角板和尺規把平行線畫準確。