This is the 8913th most frequent Portuguese word.
artísticos
"Artísticos" means "artistic" in English.
Here, 'artísticos' is an adjective describing 'projetos', adding the quality of being related to art.
Os alunos participaram de projetos artísticos na escola.
The students participated in artistic projects at school.
In this sentence, 'artísticos' acts as an adjective modifying 'talentos', indicating that the talents are related to art.
Ele tem talentos artísticos que impressionam todos.
He has artistic talents that impress everyone.
Here, 'artísticas' qualifies 'formas', attributing the characteristic of being art-related to the subject of forms.