Re: Need help for the meaning of symbol (circle,square,triangle)
As for the symbols. They don't mean Ai Ki Do as was stated before. Each symbol represents principals but that will be determined on how you see the art. My meaning for the triangle might be different than your meaning.
John Stevens goes into some length about the various meanings of the triangle-circle-square in "The Essence of Aikido." The pertinent excerpt is here: http://www.amazon.com/gp/sitbv3/read...R yr/WrXC37I=
which is on pg. 31.with O Sensei's diagram