| 11. | It is an example of a geometry that is not Euclidean.
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| 12. | We can avoid this by using four Euclidean coordinates, with.
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| 13. | This can be done by the Euclidean algorithm, polynomial case.
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| 14. | Binary relations that are both reflexive and Euclidean are equivalence relations.
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| 15. | As a very simple example, take to be Euclidean space.
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| 16. | This is reminiscent of the isoperimetric problem in the Euclidean plane.
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| 17. | See rotations in 4-dimensional Euclidean space for some information.
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| 18. | There are 151 4-uniform tilings of the Euclidean plane.
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| 19. | There are 332 5-uniform tilings of the Euclidean plane.
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| 20. | A commonly used distance metric for continuous variables is Euclidean distance.
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