arrow_back Find the lengths of the sides and the interior angles of the triangle in $R^{4}$ whose vertices are $$P(2,4,2,4,2), \quad Q(6,4,4,4,6), \quad R(5,7,5,7,2)$$

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Find the lengths of the sides and the interior angles of the triangle in $R^{4}$ whose vertices are $$P(2,4,2,4,2), \quad Q(6,4,4,4,6), \quad R(5,7,5,7,2)$$

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