Focus on this artwork and explain the abstract.
San Giovenale Triptych is a 1422 painting by Italian Renaissance artist Masaccio, housed in the Masaccio Museum of Sacred Art at Cascia di Reggello, in the Metropolitan City of Florence.  The triptych is the first work attributed to Masaccio and the earliest known painting essay using the geometric Renaissance perspective.
Reggello Masaccio Metropolitan City of Florence Renaissance perspective Cascia di Reggello