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TOEFL BNC: 45532 COCA: 45434
quadrilateral
noun [C] maths /ˌkwɒdrɪˈlæt(ə)rəl/
singularquadrilateral
pluralquadrilaterals
  1. a flat shape with four sides such as a square 四边形(如正方形)
     Synonyms and related words
    Shapes with many angles: chevron, cross, cube...

derived word

quadrilateral

adjective
 Synonyms and related words
TOEFL BNC: 45532 COCA: 45434
TOEFL BNC: 45532 COCA: 45434

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