The British drawing-book : or, the art of drawing with accuracy and beauty, containing a series of progressive lessons on drawing landscape scenery, marine views, architecture, animals, the human figure, &c. &c. also, a complete system of practical perspective, illustrated with numerous practical subjects (1845)
Whittock, N. (Nathaniel), 1791-1860 · London : Published for the proprietor · leaf 57
tal direction, that which is upright, a perpendiculardirection ; where these lines meet, they form a right angle, the point where any two lines meet form an angle,Dut if the lines are at a great distance from each other, like those at e, they form an obtuse angle, if the linesare close to each…
Drawing
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