n.梯形；不等邊四邊形
A trapezoid is a quadrilateral with two parallel sides. 梯形是具有兩平行邊的四邊形。
In addition,it does not impose any limitation on the sloped angle of the trapezoid. 這種方法可以應(yīng)用于梯形斜邊任意坡度角的情況。
adj.梯形的
