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quadrilateral

noun
🔊/ˌkwɒdrɪˈlætərəl/
🔊/ˌkwɑːdrɪˈlætərəl/
 (geometry几何)
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  1. a flat shape with four straight sides四边形Topics Colours and Shapesc2
    Word Originmid 17th cent.: from late Latin quadrilaterus (from Latin quadri- ‘four’ + latus, later- ‘side’) + -al.

quadrilateral

adjective
🔊/ˌkwɒdrɪˈlætərəl/
🔊/ˌkwɑːdrɪˈlætərəl/
 (geometry几何)
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  1. (of a shape形状) flat and with four straight sides
    • a quadrilateral shape四边形
    Topics Colours and Shapesc2