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单词 right angle
释义

WordReference Random House Learner's Dictionary of American English © 2024
ˈright ˈan•gle, n. [countable]
  1. Mathematicsthe angle formed by two perpendicular lines;
    an angle of 90°.

WordReference Random House Unabridged Dictionary of American English © 2024
right′ an′gle, 
  1. Mathematicsthe angle formed by two radii of a circle that are drawn to the extremities of an arc equal to one quarter of the circle;
    the angle formed by two perpendicular lines that intersect;
    an angle of 90°. See diag. under angle 1.
  • Middle English 1350–1400
right′-an′gled, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
right angle n
  1. the angle between two radii of a circle that cut off on the circumference an arc equal in length to one quarter of the circumference; an angle of 90° or π/2 radians
  2. at right angles ⇒ perpendicular or perpendicularly

ˈright-ˌangled adj
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更新时间：2024/9/21 0:50:29