- be stated, in the outset, that perspectivecannot deal directly with circles, or curves of anykind : it must treat them indirectly, by the help ofstraight lines. In Fig. 1, cut D, we have a circle inscribed ina square.Now, sup-pose the eyeat an in fi-nite distancein the direc-tion indicat-ed bythe… … 258 TEACHERS MANUAL. somewhat, so as to look obliquely down upon thesquare and circle. The lines a6, sr, and dc, will beforeshortened ; not onl}- that, each half will be fore-shortened alike. The appearance of the whole asthus viewed is shown at Fig. 2. The square becomesin appearance an oblong ;…
Drawing
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