n.不规则四边形

A trapezoid has two parallel sides, while the other two sides are non-parallel.
梯形有两个平行边，而另外两个边不平行。
The area of the trapezoid can be calculated using the formula: (a + b) * h / 2, where a and b are the lengths of the parallel sides, and h is the height.
梯形的面积可以通过公式计算：(a + b) * h / 2，其中a和b是平行边的长度，h是高。
In a right trapezoid, one pair of opposite sides is both parallel and perpendicular to each other.
在直角梯形中，一对对边既是平行的又是垂直的。
She drew a trapezoid on the whiteboard to illustrate the concept of similar shapes.
她在白板上画了一个梯形来说明相似形状的概念。
The trapezoidal prism has four trapezoidal faces and two rectangular faces.
梯形棱柱有四个梯形面和两个矩形面。
The roof of the house is an example of a trapezoidal shape, with a gradual slope on either side.
房屋的屋顶是一个梯形的例子，两侧都有逐渐的斜坡。
In geometry class, they explored different properties of isosceles trapezoids, which have two pairs of equal sides.
在几何课上，他们研究了等腰梯形的不同特性，这种梯形有两对相等的边。
The garden path was designed in the form of a trapezoid, providing easy access to all areas.
花园小径设计成梯形形式，方便到达所有区域。
The architect used a trapezoidal window to add visual interest to the building's façade.
建筑师使用梯形窗户为建筑物正面增添了视觉吸引力。
The teacher measured the dimensions of the trapezoidal-shaped desk to ensure it fit perfectly in the classroom.
老师测量了这个梯形形状的课桌尺寸，确保它能完美地适应教室。