The next kind of propositions we have to consider are general propositions, such as "all men are mortal," "all equilateral triangles are equiangular."
"Our Knowledge of the External World as a Field for Scientific Method in Philosophy"
Bertrand Russell
In the affirmations of common speech, P is always a term of greater extent than S. No. 2 represents the special case where S and P are coextensive, as in All equiangular triangles are equilateral.
"Logic, Inductive and Deductive"
William Minto
11.36: If three straight lines are proportional, then the parallelepipedal solid formed out of the three equals the parallelepipedal solid on the mean which is equilateral, but equiangular with the aforesaid solid.
"The Mathematicall Praeface to Elements of Geometrie of Euclid of Megara"
John Dee