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English definition of “rectangle”

rectangle

noun [C] uk   /ˈrek.tæŋ.ɡl̩/ us  
C1 a flat shape with four 90° angles and four sides, with opposite sides of equal lengthGeometrical shapesSpherical, circular and annular objects
(Definition of rectangle from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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