right angle

See also: right-angle

English

At the bottom left of this triangle is a right angle.

Etymology

Calque of Latin angulus rectus.

Pronunciation

  • IPA(key): /ˈɹaɪt ˌæŋɡəl/
  • Audio (Southern England):(file)

Noun

right angle (plural right angles)

  1. (geometry) Half of the angle formed by a single straight line, equivalent to 90 degrees.
    Coordinate terms: acute angle, obtuse angle
  2. (mathematics) An ∟ character.

Derived terms

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