tetrastigm

tetrastigm
tetrastigm Geom.
(ˈtɛtrəstɪg(ə)m)
[f. Gr. τετρα- tetra- + στίγµα prick, mark, point.]
The complete figure composed of four points in a plane and their six connecting straight lines; commonly called complete quadrangle.
[see tetragram 2].

Useful english dictionary. 2012.

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  • Complete quadrangle — A complete quadrangle (at left) and a complete quadrilateral (at right). In mathematics, specifically projective geometry, a complete quadrangle is a system of geometric objects consisting of any four points in the Euclidean plane, no three of… …   Wikipedia

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