law of species

law of species

[′lȯ əv ′spē‚shēz]
(mathematics)
The law that one-half the sum of two angles in a spherical triangle and one-half the sum of the two opposite sides are of the same species, in that they are both acute or both obtuse angles.
References in periodicals archive ?
What current trends in the law of species protection address the concerns of both ends of the spectrum?