Freehand perspective and sketching; principles and methods of expression in the pictorial representation of common objects, interiors, buildings and landscapes (1916)
Norton, Dora Miriam · Brooklyn : The author · leaf 113
D toward the vanishing point. As the long diameter isalways at right angles to theaxis, it must change its positionwhen the object is moved so thatits axis appears changed indirection. We see thereforethat tlie long diameter is movable.These experiments may betried with other cylindrical ob-jects,… … Fig. 152
Drawing · Perspective
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