This is the 11344th most frequent Portuguese word.
mostradas
"Mostradas" means "shown" or "displayed" in English.
The participle 'mostradas' is used as an adjective modifying 'imagens', indicating those that were shown.
As imagens mostradas no relatório são muito detalhadas.
The images shown in the report are very detailed.
The participle 'mostradas' is again functioning adjectivally, describing 'informações', which were provided/shown by witnesses.
Todas as informações mostradas pelas testemunhas foram verificadas.
All the information shown by the witnesses was verified.
The term 'mostradas', as a participle, specifies 'obras', the items shown in a particular event (the exhibition).