Lesson 4
The Trigrams
When three broken/unbroken lines are arranged one on top of another, eight different diagrams are formed. Each is called a trigram. Each of the lines forming the trigram is called a yao. The yaos are counted from bottom to top.
Each trigram is also called a gua. The eight trigrams together form a Ba Gua (the Eight Trigrams). They were arranged in the following way called the Xian Tian Ba Gua according to Fu Xi.
