Glossary
What a Hexagram Is in the I Ching
The hexagram is the main structural unit of an I Ching reading. When people speak of receiving a reading, they usually mean receiving one primary hexagram and sometimes a changed hexagram.
In short
A hexagram is a six-line figure formed by stacking one trigram above another. The I Ching contains sixty-four possible hexagrams.
How a hexagram is built
A hexagram is built from six lines, read from bottom to top. Those six lines are usually understood as two stacked trigrams.
Because each line can be yin or yang, there are sixty-four possible six-line configurations.
Why hexagrams matter
The hexagram is the figure that names the pattern of the reading. It gives the cast its structure before any commentary or interpretation is added.
That is why most interpretive work begins with identifying the primary hexagram correctly.
How to use a hexagram in interpretation
A hexagram is not just a label. It is a structured pattern made from lines and trigrams, so its meaning becomes clearer when you study how it is assembled.
This is also why changing lines matter: they alter the line pattern and can generate a second hexagram.