Thanks! I hope you find another place for your daughter to train, and maybe even you will try it out :) Triangles are very effective against people who have no training, for mma, and for self-defense. In all reality, in a self-defense situation, you really do not want to be on your back. But if you are taken down and are on your back, you want to know these. Triangles are very diverse and can be hit from so many angles and positions. They are a staple in jiu jitsu.