The basic unit of measurement for a Metric Circle is the “circle.”

- 1 decicircle (dc) is 1/10 of a circle. There are 10dc’s to 1 circle.
- 1 centicircle (cc) is 1/100 of a circle. There are 10cc’s to 1dc, and 100cc’s to 1 circle.
- 1 millicircle (mc) is 1/1000 of a circle. There are 10mc’s to 1 cc, 100mc’s to 1dc, and 1000mc’s to 1 circle.

Or, in other words:

- 90 degrees is 0.25 circle.
- 180 degrees is 0.5 circle.
- 720 degrees is 2 circles.

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