quasi-parallelogram

Meanings

1. 1
   noun

   a figure that resembles or approximately satisfies the defining relations of a parallelogram without being an exact Euclidean parallelogram

   The four points form a quasi-parallelogram whose opposite displacements are only approximately equivalent.

Formed from quasi- ("as if; approximately") + parallelogram. Russell used the term in his account of Weyl's geometry, and later mathematical writing uses it for figures or identities that retain a weakened parallelogram property.

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