The vantage point is significant to perspective because a.
the converging lines of the objects within the piece must lead to one or more vantage points in order for perspective to be achieved.
b.
it determines the type of perspective the artist will use.
c.
it allows the artist to determine the horizon, and the vanishing points with which the objects within the piece will lead to.
d.
it accomplishes all of the above

Which of these artists is particularly known for painting the madonna

According to the article in wiki answer, digital communication systems have more benefits than analog systems. they are faster and more flexible, and they offer better performance than analog communication

Silverpoint is a. a technique using the blackish residue of impure carbon obtained by removing water from animal and vegetation substances. b. a technique involving the use of a metal point, and a thin silver wire, popular in the 14th and 15th centuries. c. a printmaking technique born from crayon manner that imitates the appearance of chalk lines. d. a technique used since the 16th century involving a stick filled with either colored or black graphite, a heated mixture of carbon and clay