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alias: ["l'espace affine R²", "espace affine R²", "espace affine ℝ²", "R²", "ℝ²"]
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up:: [[espace affine]] 
sibling:: [[espace vectoriel R carré]]
title:: "espace de [[direction d'un espace affine|direction]] $\mathbb{R}^{2}$"
#s/maths/algèbre 

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