When and where was the first mathematical system of perspective in painting developed

The is the size of the opening in the camera that the light passes through. a. shutter b. lens c. aperture d. sensor

The business analysis step of product development, states that "if the new product is it will be selected.

Hurrywhat best describes an a. instruments that produce a sound through vibrating column of air, including the woodwind and brass family.b. simple, solid instruments that produce sound by being struck, scraped, or shakenc. instruments that produce sound by striking or rubbing a skin or membrane stretched across a resonating air chamberd. instruments that produce sound when a string or chord is struck, rubbed, or plucked