n.三角形,三角形物体,三角铁(打击乐器),三角关系
triangle的复数

原形：triangle复数：triangles

He cut the watermelon into triangles.
他把西瓜切成了三角形。
A triangle has three angles.
三角形有三个角。
The triangle is a basic shape in geometry.
三角形是几何学中的基本形状。
She drew a right-angled triangle to illustrate the Pythagorean theorem.
她画了一个直角三角形来说明勾股定理。
The Eiffel Tower, with its distinctive triangular structure, is a symbol of Paris.
埃菲尔铁塔以其独特的三角结构，成为巴黎的标志。
In a triangle, the sum of the angles equals 180 degrees.
在三角形中，三个角的和等于180度。
The soccer field is divided into three triangles for training purposes.
足球场为了训练目的被划分为三个三角区域。
A scalene triangle has no equal sides or angles.
不等边三角形没有相等的边或角。
The triangle ABC is equilateral if all its sides are of the same length.
如果三角形ABC的所有边都等长，那么它是等边三角形。
The musician played a haunting melody on his triangle, creating an eerie atmosphere.
音乐家在他的三角铁上奏出了一首凄美的旋律，营造出一种诡异的氛围。
In a triangle, the longest side is opposite the largest angle.
在三角形中，最长的边对应最大的角。
The triangle inequality states that the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
三角不等式指出，三角形中任何两边长度之和必须大于第三边的长度。