How can I identify quotient set $\mathcal{V}\backslash\{0\}_{/\sim}$ as geometrically object?

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Let $\mathcal{V}=\{\overrightarrow{AB}\;| A, B \in \mathbb{R}^2\}$. On $\mathcal{V} \backslash\{0\}$ define following equivalence relation: $v\sim w \iff \exists\lambda\in\mathbb{R}^{*}$ such that $v=\lambda w$.
How can I identify quotient set $\mathcal{V}\backslash\{0\}_{/\sim}$ as geometrically object?