. . "A sketch (ultimately from Greek \u03C3\u03C7\u03AD\u03B4\u03B9\u03BF\u03C2 \u2013 schedios, \"done extempore\") is a rapidly executed freehand drawing that is not usually intended as a finished work. A sketch may serve a number of purposes: it might record something that the artist sees, it might record or develop an idea for later use or it might be used as a quick way of graphically demonstrating an image, idea or principle. Sketches can be made in any drawing medium."@en .