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Euclidean Distance

Updated 24 Sep 2026

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What it is
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  straight-line distance between poitns
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Formula
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  for $p=(x_1,y_1)$ and $q=(x_2,y_2)$ : $d_2(p,q)=\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$
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Example
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  from $(0,0)$ to $(3,4)$ : $d_2=5$
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Related
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  Manhattan Distance
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  Chebyshev Distance

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