鋭えい角かく

え

い

か

く

Common wordFreq.FrequencyTop 50,000

Meanings

1

noun

acute angle

Mathematical term for an angle less than 90 degrees. Often contrasted with 鈍角 (obtuse angle).

鈍どん角かく
鈍角 means 'obtuse angle' (greater than 90 degrees and less than 180 degrees), the direct opposite of 鋭角.
直ちょっ角かく
直角 means 'right angle' (exactly 90 degrees), which is neither acute nor obtuse.

Compound of 鋭 (ei, 'sharp') and 角 (kaku, 'angle'), directly translating to 'sharp angle'.