- birectangular
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Containing two right angles.
Unlike a normal triangle, a spherical triangle can be birectangular because the sum of its angles is greater than 180 degrees.
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birectangular
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Birectangular — Bi rec*tan gu*lar, a. [Pref. bi + rectangular.] Containing or having two right angles; as, a birectangular spherical triangle. [1913 Webster] … The Collaborative International Dictionary of English
birectangular — (ˈ)bī+ adjective Etymology: bi (I) + rectangular : having two right angles a birectangular spherical triangle * * * /buy rek tang gyeuh leuhr/, adj. Geom. having two right angles. [BI 1 + RECTANGULAR] … Useful english dictionary
birectangular — /buy rek tang gyeuh leuhr/, adj. Geom. having two right angles. [BI 1 + RECTANGULAR] * * * … Universalium
birectangular — bi·rectangular … English syllables
Schläfli orthoscheme — In geometry, Schläfli orthoscheme is a type of simplex. They are defined by a sequence of edges that are mutually orthogonal. These were introduced by Ludwig Schläfli, who called them orthoschemes and studied their volume in the Euclidean,… … Wikipedia
