n. a three-sided polygon
n. something approximating the shape of a triangle
n. any of various triangular drafting instruments used to draw straight lines at specified angles
n. a percussion instrument consisting of a metal bar bent in the shape of an open triangle
n. 三角形, 三个一组, 三角关系
[医] 三角, 三角形
1. A triangle has three sides and three angles.
三角形有三条边和三个角。
2. In math class, we learned how to calculate the area of a triangle.
在数学课上，我们学习了如何计算三角形的面积。
3. The roof of the house is shaped like a triangle.
房子的屋顶呈三角形。