Ikebana a piece's color combinations, natural shapes, graceful lines, and the implied meaning of the arrangement. Another common but not exclusive aspect present in "ikebana" is its employment of minimalism. Some arrangements may consist of only a minimal number of blooms interspersed among stalks and leaves. The structure of some Japanese flower arrangements is based on a scalene triangle delineated by three main points, usually twigs, considered in some schools to symbolize heaven, human, and earth, or sun, moon, and earth. Use of these terms is limited to certain schools and is not customary in more traditional schools. A notable exception
Ikebana a March 2015 TEDx in Shimizu, Shizuoka, where he elaborated on the relationship of "ikebana" to beauty. Another practitioner is the Hollywood actress Marcia Gay Harden, who started when she was living in Japan as a child. She has published a book about it with her works. There are over 1,000 different types of schools of "ikebana" throughout the world today. A school is normally headed by an "iemoto", oftentimes passed down within a family from one generation to the next. Some of the most historic and well-known schools are: "Ikenobō" goes back to the 700s CE of the Heian