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Axial symmetry is symmetry around an axis; an object is axially symmetric if its appearance is unchanged if rotated around an axis.[1] For example, a baseball bat without trademark or other design, or a plain white tea saucer, looks the same if it is rotated by any angle about the line passing lengthwise through its center, so it is axially symmetric.
![](http://178.128.105.246/cars-http-upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Surface_of_revolution_illustration.png/160px-Surface_of_revolution_illustration.png)
![](http://178.128.105.246/cars-http-upload.wikimedia.org/wikipedia/commons/thumb/b/b6/Pentagonal_prism.png/160px-Pentagonal_prism.png)
Axial symmetry can also be discrete with a fixed angle of rotation, 360°/n for n-fold symmetry.
See also
edit- Axiality (geometry)
- Circular symmetry
- Reflection symmetry
- Rotational symmetry has a more general discussion
- Chiral symmetry describes the use in quantum mechanics
References
edit- ^ "Axial symmetry" American Meteorological Society glossary of meteorology. Retrieved 2010-04-08.