quadrilateral

The quadrilateral takes eight arguments representing the four points of the quadrilateral..四边形接受八个参数，代表的是这个四边形的四个顶点。

They learn the Latin root later, or side, and construct such English words as bilateral and quadrilateral..他们又学了拉丁词根later（意思是“边”），并且组成了英语单词bilateral（双边的）和 quadrilateral（四边的）。

It comprises two quadrilateral Building courts, or upper and lower wards, separated by the Round Tower (erected by Henry II), a massive structure Built on a mound and visible for many miles..由两个四方形的庭院构成，院落之间隔着一个巨大的圆塔。圆塔建于人工堆成的小丘上，几哩之外都能看见。

quadrilateral element,四边形元