Select two 15th-century (early) Renaissance art pieces. For each piece, offer a name, artist, location of the piece, and citation so you can locate the piece again with ease. While doing your research, consider this criteria.

The specific description of the piece must include a brief analysis of the work relative to the appropriate use of some of the following terms:

- line
- colour
- value
- texture
- shape
- form
- space
- balance
- emphasis
- contrast,
- movement
- rhythm and pattern
- unity

You must be able to use at least two different terms as you describe each piece.