名词
中文翻译：三叉戟
同义词：
['triangular', 'triangle']
例句：
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1.The triangle is the shape of a right-angled triangle.
三角形是直角三角形的形状。
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2. The triangles on the map are labeled with their coordinates.
地图上的三角形标记了它们的坐标。
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3. The triangle inequality theorem states that the sum of any three sides of a triangle must be greater than the sum of any two sides.
三角形不等式定理表明，任意三个三角形边长的和必须大于任意两边之和。