# Unit Circle Chart Eights π (pi)

This figure illustrates the unit circle chart annotated using (pi). The unit chart shows the position of points along the unit circle that are formed by divided the circle into and parts. See how to build the unit circle chart for how to build the chart. See unit circle pdf for a printable PDF of the chart.

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The greek letter π (pi) is a geometric constant approximately equal to 3.1416. Its value is equal to the length of any circle's circumference divided by its diameter.

The unit circle chart shows the position of the points along the circle that are formed by dividing the circle into eight and twelve parts.