In Spanish, for the sentence 'Usted tiene las reglas rojas para la clase de geometría,' 'las' is the correct definite article to use with the plural, feminine noun 'reglas.'
Usted tiene las reglas rojas para la clase de geometría.
In this sentence, the correct definite article to use before 'reglas' (rules) is las because 'reglas' is a feminine, plural noun. When the noun is definite and plural, the appropriate definite article (in this case, las) is used.
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