What kind of colors are black white and gray?

On formal artistic theory, black, white and grays are not considered colours, as shades and tints of colours. So colours are just the "pure colours" (but without white and black). But on common use, you use the term "colour" for dresses, cars, sheets, pencils, etc.

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And another question, what are the 3 primary colors?

See what happens when you mix together the three primary colors of light: red, green and blue. Regarding this, what are the 7 types of lines? Points, Lines and Angles. Horizontal Lines. Vertical Lines. Parallel Lines. Perpendicular Lines. Some Other types of Lines in Maths.

What are the 4 types of lines in art?

There are 5 main types of lines in art: vertical lines, horizontal lines, diagonal lines, zigzag lines, and curved lines. In respect to this, what are the 7 types of lines in art? What Are The 7 Types Of Lines In Art? A line may be thick, thin, horizontal, vertical, zigzag, diagonal, curly, curved, spiral, etc.

Subsequently, what is a hidden line?

Hidden lines in a drawing represent the edges where surfaces meet but are not directly visible. Hidden lines are omitted from pictorial drawings unless they are needed to make the drawing clear. What are the types of line and their uses? Following are the different types of lines used in engineering drawing: A type ? Continuos Thick. B type ? Continuous THIN. C type ? Continuous THIN Freehand. D type ? Continuous THIN Zig-Zag. E type ? Dashes THICK. F type ? Dashes THIN. G type ? Chain Thin. H type ? Chain THIN and THICK.