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单词 exterior angle
释义

WordReference Random House Unabridged Dictionary of American English © 2024
exterior angle, [Geom.]
  1. Mathematicsan angle formed outside parallel lines by a third line that intersects them. See diag. under interior angle. 
  2. Mathematicsan angle formed outside a polygon by one side and an extension of an adjacent side;
    the supplement of an interior angle of the polygon.
  • 1885–90

Collins Concise English Dictionary © HarperCollins Publishers::
exterior angle n
  1. an angle of a polygon contained between one side extended and the adjacent side
  2. any of the four angles made by a transversal that are outside the region between the two intersected lines
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