Jisho

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ちょっかく 直角
Common word JLPT N2 Links
Noun, Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'
1. right angle​
Wikipedia definition
2. Right angle​In geometry and trigonometry, a right angle is an angle that bisects the angle formed by two halves of a straight line. More precisely, if a ray is placed so that its endpoint is on a line and the adjacent angles are equal, then they are right angles. As a rotation, a right angle corresponds to a quarter turn (that is, a quarter of a full circle).
Read “Right angle” on English Wikipedia
Read “直角” on Japanese Wikipedia
Read “Right angle” on DBpedia

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