triangularityn.
/trʌɪaŋɡjuːˈlarɪti/ The quality of being triangular; triangular form.
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the world > space > shape > angularity > specific angular shape > [noun] > triangle > quality
three-corneredness1682
triangularitya1688
scalenity1788
trilateralitya1856
the world > relative properties > number > geometry > shape or figure > [noun] > two-dimensional > triangle > quality of
triangularitya1688
trilateralitya1856
a1688 R. Cudworth Treat. Eternal & Immutable Morality (1731) i. ii. 14 Things are White by Whiteness, and Black by Blackness, Triangular by Triangularity, and Round by Rotundity.
a1751 Visct. Bolingbroke Wks. (1754) III. 436 We say, for instance, not only that certain figures are triangular, but we discourse of triangularity.
1788 T. Taylor tr. Proclus Philos. & Math. Comm. I. 48 Its triangularity would be essential, supposing every species of triangles but the isosceles extinct.
1805 R. P. Knight Princ. Taste (ed. 2) i. iii. 38 It partook..of the qualities of the immutable idea of triangularity.
This entry has not yet been fully updated (first published 1914; most recently modified version published online December 2018).
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