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Aires de rectangles sur damiers
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vendredi 19 février 2010 à
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Géométrie | Page principale Jeux et Mathématiques
Aires colorées
Tracez un rectangle dont les côtés sont parallèles aux lignes horizontales ou verticales du damier.
Les cases d'un damier sont alternativement noires (grises sur le schéma) ou blanches et la surface du rectangle se partage entre une partie noire et une partie blanche.
À quelle condition les aires des deux parties noires et blanches du rectangle sont-elles égales ?
Ces rectangles ont la propriété des aires égales