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| translational, | reflectional, and | rotational |
| We are familiar with three forms of symmetry, exhibited approximately in many natural and manufactured situations. They are | ||||||
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| symmetry. | ||||||
| Hermann Weyl's wonderful book Symmetry remains the best reference, though it places some mathematical demands on the reader. | ||||||
| Less familiar is symmetry under magnification: zooming in on an object leaves the shape approximately unaltered. | ||||||
| Clouds: the smaller clouds are smaller copies of the larger cloud. | ||||||
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