vertex
n
(pl -tices ) 1(fml 文) highest point or top; apex 最高点; 顶点
(anatomy解) the vertex of the skull 颅骨顶.
2 (mathematics 数)
(a) point of a triangle, cone, etc opposite the base (三角形、 圆锥体等与底相对的)顶.
(b) meeting point of lines that form an angle, eg any point of a triangle, polygon, etc (三角形、 多角形等的)角的顶点.