Japanese

Noun

鋭角 ‎(shinjitai kanji, kyūjitai kanji 銳角, hiragana えいかく, romaji eikaku)

1. (geometry) acute angle

Antonyms

• 鈍角 (どんかく) ‎(donkaku, “obtuse angle”)

Compounds

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

References

• 2002, Ineko Kondō; Fumi Takano; Mary E Althaus; et. al., Shogakukan Progressive Japanese-English Dictionary, Third Edition, Tokyo: Shōgakukan, ISBN 4095102535.