list some of the identifiable features of Renaissance art and architecture (as opposed to medieval art)

The main features in Renaissance art and architecture were:

Humanist and rationalist vision Use of mathematics and geometry Search for perfection and beauty Concern about proportion Balanced and harmonious forms Search for symmetry and order Formal and individual style Religious, mythological and nature themes Use of arches, vaults, domes and columns Predominance of horizontal lines

Contrary to the characteristics of the medieval style they were:

Religious themes Monumental art Romance style Gothic style Use of arches and vaults