PARALLELOGRAM

Pronunciation (US): (GB):

Meaning:

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

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)