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Symbol | Definition |
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≡ | exactly equal |
≈ | approximately equal to |
= | equal to |
digits | indicates that digits repeat infinitely (e.g. 8.294 369 corresponds to 8.294 369 369 369 369 …) |
Full circle is a traditional unit of plane angle. It is equal to 360 degrees. Plural name is full circles.
1/8 circle or eighth circle is equal to 360/8 = 45°. Plural name is eighth circles.