Definify.com

Webster 1913 Edition

Birectangular

Biˊrec-tan′gu-lar

,

Adj.

[Pref.

bi-

+

rectangular

.]

Containing or having two right angles;

as, a

birectangular

spherical triangle

.

Definition 2024

birectangular

birectangular

English

Adjective

birectangular ‎(not comparable)

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.