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Maths · 2D vectors

Crossover

A diagram shows three vectors forming a triangle: PQ=(43)\overrightarrow{PQ} = \begin{pmatrix}4\\3\end{pmatrix}, QR=(15)\overrightarrow{QR} = \begin{pmatrix}-1\\5\end{pmatrix}. Find the perimeter of triangle PQRPQR.

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