Quadrantal triangle
Quadrantal Quad*ran"tal, a. [L. quadrantalis containing the fourth fourth part of a measure.] (Geom.) Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space. [1913 Webster]

{Quadrantal triangle}, a spherical triangle having one side equal to a quadrant or arc of 90[deg].

{Quadrantal versor}, a versor that expresses rotation through one right angle. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • quadrantal triangle — noun : a spherical triangle with one side equal to a quadrant …   Useful english dictionary

  • Quadrantal — Quad*ran tal, a. [L. quadrantalis containing the fourth fourth part of a measure.] (Geom.) Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space. [1913 Webster] {Quadrantal triangle}, a spherical… …   The Collaborative International Dictionary of English

  • Quadrantal versor — Quadrantal Quad*ran tal, a. [L. quadrantalis containing the fourth fourth part of a measure.] (Geom.) Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space. [1913 Webster] {Quadrantal triangle}, a… …   The Collaborative International Dictionary of English

  • Triquadrantal — Tri quad*ran tal, a. [Pref. tri + quadrantal.] (Spherical Trig.) Having three quadrants; thus, a triquadrantal triangle is one whose three sides are quadrants, and whose three angles are consequently right angles. [1913 Webster] …   The Collaborative International Dictionary of English

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