V2EX vertex

Vertex

释义 Definition

“Vertex” 指顶点:几何图形中两条边相交形成的角点;也可指曲线或抛物线的最高点/最低点。(在更专业语境中也可指头顶或事物的顶端。)

发音 Pronunciation

/vrteks/

例句 Examples

A triangle has three vertices.
三角形有三个顶点。

The parabola’s vertex lies at the minimum point of the curve, where the direction changes.
抛物线的顶点位于曲线的最低点,在那里曲线的方向发生改变。

词源 Etymology

“Vertex” 源自拉丁语 vertex/verticis,原意与“旋转、漩涡、顶端”相关,后来引申为“最上端、尖端”,在数学与几何中固定为“顶点”的含义。

相关词 Related Words

文学作品 Literary Works

  • 欧几里得《几何原本》(Elements)中在讨论多边形、角与几何证明时会使用“vertex/vertices”(常见于英文译本的几何术语体系中)。
  • 勒内笛卡尔《几何学》(La Géométrie;英文常译作 Geometry)相关译本在解析几何语境下讨论曲线与极值点时常出现“vertex”。
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