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Jyutping ngau1 gu2
Pinyin gōu gǔ

Definitions (Wiktionary)
  1. noun
    right triangle
  2. noun
    the longer and shorter legs of a right triangle
  3. noun
    mathematics involving right triangles: trigonometry, especially (historical) traditional Chinese methods of trigonometry
  4. noun
    related to right triangles: trigonometrical
Examples (Wiktionary)
  1. Mandarin
    勾股定理
    勾股定理
    gōu gǔ dìng lǐ
    • Pythagoras' theorem