名词
中文翻译：Unknown
同义词：
['trapezoid', 'trapezoidal']
例句：
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1. The shape of the building is a trapezoid.
这座建筑的形状是梯形。
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2. In mathematics, a trapezoid is a figure with four right angles and two parallel sides.
在数学中，梯形是一种有四个直角和两条平行边的图形。
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3. The area of a trapezoid can be calculated using the formula A = (b + h) * (a+ c) / 2, where b is the base, h is the height, a is the length of one side, and c is the length of the other side.
梯形的面积可以通过公式A = (b + h) * (a + c) / 2来计算，其中b是底边，h是高，a是一边的长度，c是另一边的长度。