acute angle

English

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Noun

acute angle (plural acute angles)

  2. (geometry) An angle greater than 0 degrees and less than 90 degrees.
    • 1960 February, R. K. Kirkland, “The Great Western and Brentford Railway”, in Railway Magazine, page 81:
      The line then falls on a gradient of 1 in 102 to the point at Windmill Lane, known locally as the "Three Bridges," where there is a composite crossing of road, canal and railway, all at the same point. The road is carried over the canal by an orthodox-style bridge, the canal being contained in a cast-iron trough, 8 ft. deep, which passes at an acute angle over the railway. (This arrangement at Southall remains the same in 2026)

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