V2EX parallelogram

Parallelogram

释义 Definition

parallelogram(平行四边形):一种四边形,两组对边分别平行且等长;对角相等,邻角互补。(在几何中最常见的用法;在更广泛语境中也可引申指“平行四边形状的东西”。)

发音 Pronunciation

/prllrm/

例句 Examples

A parallelogram has two pairs of parallel sides.
平行四边形有两组互相平行的边。

If you draw the diagonal of a parallelogram, it divides the shape into two congruent triangles.
如果你画出平行四边形的一条对角线,它会把这个图形分成两个全等三角形。

词源 Etymology

来自希腊语构词:**para-**(“在旁、并列、相对”)+ -logram(“画出来的图形/线条”,与“写/画”有关),整体意思接近“由平行线构成的图形”。该词在数学与几何传统中长期使用,逐渐固定为“平行四边形”的专门术语。

相关词 Related Words

文学作品 Literary Works

  • Euclid, Elements(《几何原本》):在几何证明与作图中频繁讨论与使用平行四边形及其性质(如面积、对角线分割等)。
  • Lewis Carroll, Euclid and His Modern Rivals:以对话与讽喻方式谈论欧几里得几何中的概念,涉及包括平行四边形在内的经典图形术语。
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