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parallelogram

noun
/ˌpærəˈleləɡræm/
/ˌpærəˈleləɡræm/
(geometry几何)
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  1. a flat shape with four straight sides, the opposite sides being the same distance apart at every point and equal to each other平行四边形
    Topics Colours and Shapesc2
    Word Originlate 16th cent.: from French parallélogramme, via late Latin from Greek parallēlogrammon, from parallēlos ‘alongside another’ + grammē ‘line’.

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