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 "nageirebana", or "ikebana", advanced rapidly in favour and developed great beauty of line. The exponents of the art not only studied nature freely, but combined this knowledge with that of "rikka", the result bringing "ikebana" to a very perfect state of development. After the Tenmei era, the purest and best taste in "ikebana" began to diminish, and a formal and artificial form of arrangement came into existence. This is the present form, which has a fixed rule or model known as heaven, human, and earth. The most popular schools of today, including "Ikenobō", "Enshū-ryū", "Mishō-ryū", among others, adhere to these