名詞 triangle:

1. a three-sided polygon
   同義詞：trigon, trilateral
2. something approximating the shape of a triangle
3. a small northern constellation near Perseus between Andromeda and Aries
   同義詞：Triangulum
4. any of various triangular drafting instruments used to draw straight lines at specified angles
5. a percussion instrument consisting of a metal bar bent in the shape of an open triangle

1. A percussion instrument consisting of a piece of metal in the shape of a triangle open at one angle.
   三角鐵一種打擊樂(lè)器，由一塊三角形的金屬構(gòu)成，在三角形的一個(gè)角開口
2. A triangle of land.
   三角形的一塊地
3. He outlined the triangle in red.
   他用紅筆畫出三角形。
4. The angles of a triangle total 180.
   三角形的三角之和等于180°。