名词
中文翻译：四边形
同义词：
['quadrilateral', 'quadrilateral']
例句：
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1.The rectangle is a basic shape in mathematics.
矩形是数学中的基本形状。
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2.The quadrilateral formed by the two triangles is equilateral.
由两个三角形形成的四边形是等腰的。
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3. The quadrilateral is used to describe the shape of a square.
四边形用来描述正方形的形状。