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[" In "/ABC" the mid points of the sides...

[" In "/_ABC" the mid points of the sides "AB,BC" and CA are "],[" respectively "(ell,0,0)(0,m,0)" and "(0,0,n)" ."],[" Then "(AB^(2)+BC^(2)+CA^(2))/(ell^(2)+m^(2)+n^(2))" is equal to "]

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