trapezoid

The main circular window - 31-inches across - is the biggest window ever bound for space. The six windows on the perimeter are trapezoid-shaped..“观光台”最大的玻璃直径31英寸，这也是有史以来太空飞行器上安装的最大玻璃窗，而四周的六块窗户呈梯形状。

I could have just drawn a trapezoid directly on my fabric, but I made a paper pattern to better illustrate how to draft the correct shape..我可能只是一个梯形直接绘制在我的布，但我做了一纸模式，以更好地说明如何起草正确的形状。

[数] 梯形；[数] 不规则四边形英释中释na shape with four sides, none of which are parallel

梯形的；[数] 不规则四边形的中释adj