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trapezium noun

  /tɹæˈpi.zi.əm/ , /tɹəˈpiː.zi.əm/
  • (restrictively) A quadrilateral with two sides parallel and two sides non-parallel.
  • (anatomy) The trapezium bone of the wrist.
 trapèze
  • (geometry, US, dated) A four-sided polygon with no parallel sides and no sides equal; a simple convex irregular quadrilateral.
 trapézoïde
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