The color is called streak which is the color of the mineral in powder form. :)
Answer:
125
Explanation:
(100/20)*25 is this correct
Shading is showing the objects' roundness or shape; shade is the blocking of a light source; and shadow is the variation between black and white with the darkest part at the center and the 'shadow' fades at the edges.
Registration will assure that the colors of a linocut or other relief print will align perfectly.