銳角

See also: 鋭角 and 锐角

Chinese

		acute	horn; angle; corner
trad. (銳角)		銳	角
simp. (锐角)		锐	角

Pronunciation

• Mandarin

  (Pinyin): ruìjiǎo

  (Zhuyin): ㄖㄨㄟˋ ㄐㄧㄠˇ

• Cantonese (Jyutping): jeoi⁶ gok³

---

• Mandarin
  • (Standard Chinese)⁺
    • Hanyu Pinyin: ruìjiǎo
    • Zhuyin: ㄖㄨㄟˋ ㄐㄧㄠˇ
    • Tongyong Pinyin: ruèijiǎo
    • Wade–Giles: jui⁴-chiao³
    • Yale: rwèi-jyǎu
    • Gwoyeu Romatzyh: rueyjeau
    • Palladius: жуйцзяо (žujczjao)
    • Sinological IPA ^(key): /ʐu̯eɪ̯⁵¹ t͡ɕi̯ɑʊ̯²¹⁴⁻²¹⁽⁴⁾/
• Cantonese
  • (Standard Cantonese, Guangzhou–Hong Kong)⁺
    • Jyutping: jeoi⁶ gok³
    • Yale: yeuih gok
    • Cantonese Pinyin: joey⁶ gok⁸
    • Guangdong Romanization: yêu⁶ gog³
    • Sinological IPA ^(key): /jɵy̯²² kɔːk̚³/

Noun

銳角

1. (geometry) acute angle
2. (architecture) angled bastion, such as those employed in Renaissance Europe's star forts.

Antonyms

• (antonym(s) of “mathematics”): 鈍角／钝角 (dùnjiǎo)

References

• Tonio Andrade's The Gunpowder Age (2016), p. 212.

Japanese

Kanji in this term
銳	角
えい Hyōgaiji	かく Grade: 2
on’yomi

Noun

銳(えい)角(かく) • (eikaku) 

1. (geometry) acute angle

Antonyms

• 鈍角(どんかく) (donkaku, “obtuse angle”)

Derived terms

• 銳角三角形(えいかくさんかっけい) (eikaku sankakkei, “acute triangle”)