Answer:
All of them
Explanation:
Renaissance artists used all of these techniques in their art.
Giotto di Bondone used the technique of proportions. True linear perspective was formalized later, by Filippo Brunelleschi and Leon Battista Alberti.
Leonardo da Vinci, and refers to a fine art painting technique of Sfumato.
Chiaroscuro was a technique which came into wide use in the Baroque Period was also used in Renaissance art age.
Renaissance artists also used shapes and lines to arrange figures into a triangle on the surface of a painting for both hierarchical and compositional reasons which shows pyramid configuration of art.
