Let’s prove \(|PR| \leq |PQ| + |QR| \) for the destances among 3 points \(P, Q, R \in \mathbb{R}^n\).
Continue reading Proof: Triangle InequalityLet’s prove \(|PR| \leq |PQ| + |QR| \) for the destances among 3 points \(P, Q, R \in \mathbb{R}^n\).
Continue reading Proof: Triangle Inequality