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Perimeter of a triangle given its vertices

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Perimeter of a triangle given its vertices
Graph Formulas
\text{Perimeter }=\overline{AB}+\overline{BC}+\overline{CA}\,


=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

+\sqrt{(x_{3}-x_{2})^2+(y_{3}-y_{2})^2}

+\sqrt{(x_{1}-x_{3})^2+(y_{1}-y_{3})^2}\,



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