Webster’s Revised Unabridged Dictionary · 1913
Birectangular
Bi′rec·tan′gu·lar (bī′rĕk·tăn̲′gū·lẽr), a. [Pref. bi- + rectangular.] Containing or having two right angles; as, a birectangular spherical triangle.
Webster’s Revised Unabridged Dictionary · 1913
Bi′rec·tan′gu·lar (bī′rĕk·tăn̲′gū·lẽr), a. [Pref. bi- + rectangular.] Containing or having two right angles; as, a birectangular spherical triangle.