ppearance of the whole asthus viewed is shown at Fig. 2. The square becomesin appearance an oblong ; and the circle, a perfectellipse. Observe that the centre and diameter, pg,of the circle, coincide with the centre and diameter,pq, of tlie ellipse, and that each quarter of thecircle becomes a… … f the square, hcshows the perspectivelength of he, the far-ther side of the square ;X/q shows the perspec-tive length of jyq. theE diameter of the circle ; and tt shows the perspective length of tt. the lineconnecting the two points of the circle touched b} MODEL AND OBJECT DRAWING. 259 tangents…
Drawing
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