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mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_es">formas geométricas</topic></authority><related type="narrower"><topic>fractales</topic></related><related type="narrower"><topic>figuras planas</topic></related><related type="narrower"><topic>sólidos</topic></related><related type="narrower"><topic>espirales</topic></related><related type="narrower"><topic>curves (traducció pendent)</topic></related><related type="narrower"><topic>arcs (traducció pendent)</topic></related><related type="broader"><topic>conceptos geométricos</topic></related></mads>