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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Successful leaders obey the law of species. They adapt quickly to change and manage evolution profitably.