Library / English Dictionary

    PARALLELOGRAM

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    A quadrilateral whose opposite sides are both parallel and equal in lengthplay

    Classified under:

    Nouns denoting two and three dimensional shapes

    Hypernyms ("parallelogram" is a kind of...):

    quadrangle; quadrilateral; tetragon (a four-sided polygon)

    Hyponyms (each of the following is a kind of "parallelogram"):

    diamond; rhomb; rhombus (a parallelogram with four equal sides; an oblique-angled equilateral parallelogram)

    rhomboid (a parallelogram with adjacent sides of unequal lengths; an oblique-angled parallelogram with only the opposite sides equal)

    rectangle (a parallelogram with four right angles)

    Antonym:

    trapezium (a quadrilateral with no parallel sides)

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