TRIQUADRANTAL
Source: 567
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.
Source: 567
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.