Perspective, a series of elementary lectures (1899)
Cone, Ada · New York, W.T. Comstock · leaf 60
64: PERSPECTIVE. is may be ascertained by measuring the number of degrees between F and E. If it is desired to measure the angle at which the object is to retreat it must be done at the Station Pointj as explained in Chapter II. The rule is as fol¬ lows : Draw a line from the 8. P. at any angle and… … Therefore, if the angle at which the lines of the object retire is known the Y. P. may be fixed as follows. Suppose the angle to be Y5°, as in Fig. 29. Having drawn the H. L. and P. Y. H., draw a horizontal line through the S, P. Draw a half circle on this last line with the S. P. as a centre.…
Perspective · Drawing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Io. Bvteonis delphinatici Opera geometrica, qvorvm titvli seqvvntur. De arca Noe, cuius formae, capacitatisq[ue] fuerit. De sublicio ponte Caesaris. Confutatio quadraturae circuli ab Orontio Finaeo factae. Ad locum Quintiliani geometricum explanatio. Ad problema cubi duplicandi. De fluentis aquae mensura. Emendatio figurationis organi a Columella descripti. De libra et statera. De precio margaritarum. In ivre civili: De fluuiaticis insulis secundum ius civile diuidendis, vbi confutatur Tyberias Bartoli. De diuisione fructus arboris in confinio natae. Geometriae cognitionem iureconsulto necessariam. Ad legem Papiniani, diuortio. Ad legem Iuliani, si ita scriptum. Ad legem Aphricani, qui quadringenta (1554)](https://img.insideoutlibrary.com/img/200/ia-gri_33125008174225-71-0.webp)
