Answer:
Single-point perspective uses only one vanishing point, whereas multiple-point perspective uses 2 or more vanishing points.
Answer:
Jan van Eyck was a leading force in 15th-century Flemish painting, due to his innovations in the use of optical perspective and handling of oil paint.
Explanation:
Louis Comfort Tiffany was an American artist, painter, decorator and designer. He is particularly remembered for his influence on Art Nouveau and his contributions to glassmaking. Tiffany was responsible for the development of "Favrile glass," which was inspired by the work of Émile Gallé at the Paris Exhibition of 1889. This glass displayed several innovative characteristics, such as impressionistic effects, iridiscence and free shapes. This embodied many of the artistic elements that would later become popular in Art Nouveau.