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

(geometry) acute angle
(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)

(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”)

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