V2EX side length

Side Length

释义 Definition

side length边长(几何中指多边形某一条边的长度;也可泛指某物某一侧的长度)。

发音 Pronunciation (IPA)

/sad leθ/

例句 Examples

The side length of the square is 5 cm.
这个正方形的边长是5厘米。

Given a triangle’s side length and included angle, you can use the law of cosines to find the remaining side length.
已知三角形的一条边长和夹角,可以用余弦定理求出另一条边长。

词源 Etymology

side 来自古英语 sīde,表示“侧面、边”;length 来自古英语 lengu,表示“长度”。合在一起 side length 字面意思就是“某一侧的长度”,在数学语境中特指“边长”。

相关词 Related Words

文学与经典作品 Literary Works

  • Euclid Elements(《几何原本》):在讨论多边形与比例时常涉及“边长”的比较与推导(英文译本中常见 side length / length of a side 的表述)。
  • Edwin A. Abbott Flatland: A Romance of Many Dimensions(《平面国》):以几何概念叙事,英文读本与教学引用中常出现关于图形“边长/边”的讨论。
  • H. S. M. Coxeter Introduction to Geometry(《几何学导论》):几何教材与经典著作中频繁使用 side length 来定义与推演图形性质。
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